1401540504 has 256 divisors, whose sum is σ = 4514119680. Its totient is φ = 352719360.

The previous prime is 1401540499. The next prime is 1401540509. The reversal of 1401540504 is 4050451041.

It is a happy number.

1401540504 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1401540499) and next prime (1401540509).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401540509) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8598327 + ... + 8598489.

It is an arithmetic number, because the mean of its divisors is an integer number (17633280).

Almost surely, 2^1401540504 is an apocalyptic number.

1401540504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1401540504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2257059840).

1401540504 is an abundant number, since it is smaller than the sum of its proper divisors (3112579176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1401540504 is a wasteful number, since it uses less digits than its factorization.

1401540504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1401540504 is about 37437.1540585018. The cubic root of 1401540504 is about 1119.0991118615.

Adding to 1401540504 its reverse (4050451041), we get a palindrome (5451991545).

The spelling of 1401540504 in words is "one billion, four hundred one million, five hundred forty thousand, five hundred four".