42909122 has 32 divisors (see below), whose sum is σ = 73084032. Its totient is φ = 18779904.

The previous prime is 42909121. The next prime is 42909137. The reversal of 42909122 is 22190924.

It is not an unprimeable number, because it can be changed into a prime (42909121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28193 + ... + 29675.

It is an arithmetic number, because the mean of its divisors is an integer number (2283876).

Almost surely, 2^42909122 is an apocalyptic number.

42909122 is a deficient number, since it is larger than the sum of its proper divisors (30174910).

42909122 is a wasteful number, since it uses less digits than its factorization.

42909122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 42909122 is about 6550.5054766789. The cubic root of 42909122 is about 350.0928243592.

The spelling of 42909122 in words is "forty-two million, nine hundred nine thousand, one hundred twenty-two".