42029818 has 8 divisors (see below), whose sum is σ = 63115380. Its totient is φ = 20991360.

The previous prime is 42029807. The next prime is 42029821. The reversal of 42029818 is 81892024.

It can be written as a sum of positive squares in 2 ways, for example, as 42029289 + 529 = 6483^2 + 23^2 .

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

It is a super-2 number, since 2×42029818² = 3533011202226248, which contains 22 as substring.

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, 9453 + ... + 13168.

Almost surely, 2^42029818 is an apocalyptic number.

42029818 is a deficient number, since it is larger than the sum of its proper divisors (21085562).

42029818 is a wasteful number, since it uses less digits than its factorization.

42029818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23552.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 42029818 is about 6483.0407988844. The cubic root of 42029818 is about 347.6849054757.

The spelling of 42029818 in words is "forty-two million, twenty-nine thousand, eight hundred eighteen".