1401144340 has 24 divisors (see below), whose sum is σ = 2943198720. Its totient is φ = 560306208.

The previous prime is 1401144313. The next prime is 1401144343. The reversal of 1401144340 is 434411041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401144343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93829 + ... + 107731.

It is an arithmetic number, because the mean of its divisors is an integer number (122633280).

Almost surely, 2^1401144340 is an apocalyptic number.

1401144340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401144340 is an abundant number, since it is smaller than the sum of its proper divisors (1542054380).

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

1401144340 is a wasteful number, since it uses less digits than its factorization.

1401144340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18951 (or 18949 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1401144340 is about 37431.8626306520. The cubic root of 1401144340 is about 1118.9936591927.

Adding to 1401144340 its reverse (434411041), we get a palindrome (1835555381).

The spelling of 1401144340 in words is "one billion, four hundred one million, one hundred forty-four thousand, three hundred forty".