402742410 has 128 divisors (see below), whose sum is σ = 1201651200. Its totient is φ = 84271104.

The previous prime is 402742367. The next prime is 402742423. The reversal of 402742410 is 14247204.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 130566 + ... + 133614.

It is an arithmetic number, because the mean of its divisors is an integer number (9387900).

Almost surely, 2^402742410 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402742410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (600825600).

402742410 is an abundant number, since it is smaller than the sum of its proper divisors (798908790).

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

402742410 is a wasteful number, since it uses less digits than its factorization.

402742410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 402742410 is about 20068.4431384201. The cubic root of 402742410 is about 738.4863202738.

Adding to 402742410 its reverse (14247204), we get a palindrome (416989614).

The spelling of 402742410 in words is "four hundred two million, seven hundred forty-two thousand, four hundred ten".