402620542 has 16 divisors (see below), whose sum is σ = 621434592. Its totient is φ = 195551200.

The previous prime is 402620531. The next prime is 402620549. The reversal of 402620542 is 245026204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402620549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8098 + ... + 29509.

It is an arithmetic number, because the mean of its divisors is an integer number (38839662).

Almost surely, 2^402620542 is an apocalyptic number.

402620542 is a deficient number, since it is larger than the sum of its proper divisors (218814050).

402620542 is a wasteful number, since it uses less digits than its factorization.

402620542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37763.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 402620542 is about 20065.4065994188. The cubic root of 402620542 is about 738.4118252386.

Adding to 402620542 its reverse (245026204), we get a palindrome (647646746).

It can be divided in two parts, 402 and 620542, that added together give a square (620944 = 788²).

The spelling of 402620542 in words is "four hundred two million, six hundred twenty thousand, five hundred forty-two".