42002402 has 8 divisors (see below), whose sum is σ = 67850076. Its totient is φ = 19385712.

The previous prime is 42002383. The next prime is 42002431. The reversal of 42002402 is 20420024.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40462321 + 1540081 = 6361^2 + 1241^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 807713 + ... + 807764.

Almost surely, 2^42002402 is an apocalyptic number.

42002402 is a deficient number, since it is larger than the sum of its proper divisors (25847674).

42002402 is a wasteful number, since it uses less digits than its factorization.

42002402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615492.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 42002402 is about 6480.9260140816. The cubic root of 42002402 is about 347.6092908830.

Adding to 42002402 its reverse (20420024), we get a palindrome (62422426).

The spelling of 42002402 in words is "forty-two million, two thousand, four hundred two".