402540054 has 32 divisors (see below), whose sum is σ = 939672576. Its totient is φ = 112563840.

The previous prime is 402540041. The next prime is 402540107. The reversal of 402540054 is 450045204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99987 + ... + 103934.

It is an arithmetic number, because the mean of its divisors is an integer number (29364768).

Almost surely, 2^402540054 is an apocalyptic number.

402540054 is an abundant number, since it is smaller than the sum of its proper divisors (537132522).

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

402540054 is a wasteful number, since it uses less digits than its factorization.

402540054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203980.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 402540054 is about 20063.4008582792. The cubic root of 402540054 is about 738.3626165787.

Adding to 402540054 its reverse (450045204), we get a palindrome (852585258).

The spelling of 402540054 in words is "four hundred two million, five hundred forty thousand, fifty-four".