42100394 has 16 divisors (see below), whose sum is σ = 73396800. Its totient is φ = 17736864.

The previous prime is 42100379. The next prime is 42100403. The reversal of 42100394 is 49300124.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 24659 + ... + 26310.

It is an arithmetic number, because the mean of its divisors is an integer number (4587300).

Almost surely, 2^42100394 is an apocalyptic number.

42100394 is a deficient number, since it is larger than the sum of its proper divisors (31296406).

42100394 is a wasteful number, since it uses less digits than its factorization.

42100394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51037.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 42100394 is about 6488.4816405689. The cubic root of 42100394 is about 347.8794061826.

The spelling of 42100394 in words is "forty-two million, one hundred thousand, three hundred ninety-four".