42645953 has 16 divisors (see below), whose sum is σ = 49655424. Its totient is φ = 35873280.

The previous prime is 42645947. The next prime is 42645959. The reversal of 42645953 is 35954624.

It is an interprime number because it is at equal distance from previous prime (42645947) and next prime (42645959).

It is a cyclic number.

It is not a de Polignac number, because 42645953 - 2¹⁰ = 42644929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42645959) 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, 122726 + ... + 123072.

It is an arithmetic number, because the mean of its divisors is an integer number (3103464).

Almost surely, 2^42645953 is an apocalyptic number.

It is an amenable number.

42645953 is a deficient number, since it is larger than the sum of its proper divisors (7009471).

42645953 is a wasteful number, since it uses less digits than its factorization.

42645953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632.

The product of its digits is 129600, while the sum is 38.

The square root of 42645953 is about 6530.3868951234. The cubic root of 42645953 is about 349.3756296958.

The spelling of 42645953 in words is "forty-two million, six hundred forty-five thousand, nine hundred fifty-three".