402740534 has 32 divisors (see below), whose sum is σ = 734054400. Its totient is φ = 161976672.

The previous prime is 402740497. The next prime is 402740539. The reversal of 402740534 is 435047204.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 402740497 and 402740506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402740539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5267 + ... + 28865.

It is an arithmetic number, because the mean of its divisors is an integer number (22939200).

Almost surely, 2^402740534 is an apocalyptic number.

402740534 is a deficient number, since it is larger than the sum of its proper divisors (331313866).

402740534 is a wasteful number, since it uses less digits than its factorization.

402740534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23684.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 402740534 is about 20068.3963983174. The cubic root of 402740534 is about 738.4851736331.

Adding to 402740534 its reverse (435047204), we get a palindrome (837787738).

The spelling of 402740534 in words is "four hundred two million, seven hundred forty thousand, five hundred thirty-four".