42353945 has 16 divisors (see below), whose sum is σ = 53682240. Its totient is φ = 31990464.

The previous prime is 42353933. The next prime is 42353951. The reversal of 42353945 is 54935324.

It is a cyclic number.

It is not a de Polignac number, because 42353945 - 2⁶ = 42353881 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37154 + ... + 38276.

It is an arithmetic number, because the mean of its divisors is an integer number (3355140).

Almost surely, 2^42353945 is an apocalyptic number.

It is an amenable number.

42353945 is a deficient number, since it is larger than the sum of its proper divisors (11328295).

42353945 is a wasteful number, since it uses less digits than its factorization.

42353945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544.

The product of its digits is 64800, while the sum is 35.

The square root of 42353945 is about 6507.9908573998. The cubic root of 42353945 is about 348.5763805669.

The spelling of 42353945 in words is "forty-two million, three hundred fifty-three thousand, nine hundred forty-five".