42042802 has 8 divisors (see below), whose sum is σ = 66773916. Its totient is φ = 19784832.

The previous prime is 42042743. The next prime is 42042809. The reversal of 42042802 is 20824024.

It can be written as a sum of positive squares in 2 ways, for example, as 31013761 + 11029041 = 5569^2 + 3321^2 .

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

It is a super-2 number, since 2×42042802² = 3535194400022408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42042809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 618243 + ... + 618310.

Almost surely, 2^42042802 is an apocalyptic number.

42042802 is a deficient number, since it is larger than the sum of its proper divisors (24731114).

42042802 is a wasteful number, since it uses less digits than its factorization.

42042802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236572.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 42042802 is about 6484.0421035030. The cubic root of 42042802 is about 347.7207044731.

Adding to 42042802 its reverse (20824024), we get a palindrome (62866826).

The spelling of 42042802 in words is "forty-two million, forty-two thousand, eight hundred two".