1040140400 has 120 divisors (see below), whose sum is σ = 2703931104. Its totient is φ = 382233600.

The previous prime is 1040140399. The next prime is 1040140429. The reversal of 1040140400 is 40410401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1648085 + ... + 1648715.

Almost surely, 2^1040140400 is an apocalyptic number.

1040140400 is a gapful number since it is divisible by the number (10) 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 1040140400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1351965552).

1040140400 is an abundant number, since it is smaller than the sum of its proper divisors (1663790704).

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

1040140400 is a wasteful number, since it uses less digits than its factorization.

1040140400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979 (or 968 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1040140400 is about 32251.2077293239. The cubic root of 1040140400 is about 1013.2049939419.

Adding to 1040140400 its reverse (40410401), we get a palindrome (1080550801).

The spelling of 1040140400 in words is "one billion, forty million, one hundred forty thousand, four hundred".