42537145 has 32 divisors (see below), whose sum is σ = 63072000. Its totient is φ = 27433728.

The previous prime is 42537139. The next prime is 42537149. The reversal of 42537145 is 54173524.

It is not a de Polignac number, because 42537145 - 2³ = 42537137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42537149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28426 + ... + 29884.

It is an arithmetic number, because the mean of its divisors is an integer number (1971000).

Almost surely, 2^42537145 is an apocalyptic number.

It is an amenable number.

42537145 is a deficient number, since it is larger than the sum of its proper divisors (20534855).

42537145 is a wasteful number, since it uses less digits than its factorization.

42537145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502 (or 1488 counting only the distinct ones).

The product of its digits is 16800, while the sum is 31.

The square root of 42537145 is about 6522.0506744428. The cubic root of 42537145 is about 349.0782412572.

The spelling of 42537145 in words is "forty-two million, five hundred thirty-seven thousand, one hundred forty-five".