402140415 has 64 divisors (see below), whose sum is σ = 700876800. Its totient is φ = 196245504.

The previous prime is 402140411. The next prime is 402140437. The reversal of 402140415 is 514041204.

It is a happy number.

It is not a de Polignac number, because 402140415 - 2² = 402140411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402140391 and 402140400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402140411) 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, 1193127 + ... + 1193463.

It is an arithmetic number, because the mean of its divisors is an integer number (10951200).

Almost surely, 2^402140415 is an apocalyptic number.

402140415 is a deficient number, since it is larger than the sum of its proper divisors (298736385).

402140415 is a wasteful number, since it uses less digits than its factorization.

402140415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 402140415 is about 20053.4389818804. The cubic root of 402140415 is about 738.1181885611.

Adding to 402140415 its reverse (514041204), we get a palindrome (916181619).

The spelling of 402140415 in words is "four hundred two million, one hundred forty thousand, four hundred fifteen".