1402340440 has 32 divisors (see below), whose sum is σ = 3168380160. Its totient is φ = 558604800.

The previous prime is 1402340413. The next prime is 1402340447. The reversal of 1402340440 is 440432041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402340447) 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, 63096 + ... + 82375.

It is an arithmetic number, because the mean of its divisors is an integer number (99011880).

Almost surely, 2^1402340440 is an apocalyptic number.

1402340440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1402340440 is an abundant number, since it is smaller than the sum of its proper divisors (1766039720).

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

1402340440 is a wasteful number, since it uses less digits than its factorization.

1402340440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145723 (or 145719 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 1402340440 is about 37447.8362525794. The cubic root of 1402340440 is about 1119.3119817723.

Adding to 1402340440 its reverse (440432041), we get a palindrome (1842772481).

The spelling of 1402340440 in words is "one billion, four hundred two million, three hundred forty thousand, four hundred forty".