75042261 has 64 divisors (see below), whose sum is σ = 135229440. Its totient is φ = 40201920.

The previous prime is 75042241. The next prime is 75042287. The reversal of 75042261 is 16224057.

It is not a de Polignac number, because 75042261 - 2⁶ = 75042197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75042241) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 265026 + ... + 265308.

It is an arithmetic number, because the mean of its divisors is an integer number (2112960).

Almost surely, 2^75042261 is an apocalyptic number.

It is an amenable number.

75042261 is a deficient number, since it is larger than the sum of its proper divisors (60187179).

75042261 is a wasteful number, since it uses less digits than its factorization.

75042261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383 (or 377 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 75042261 is about 8662.6936341995. The cubic root of 75042261 is about 421.7955273509.

The spelling of 75042261 in words is "seventy-five million, forty-two thousand, two hundred sixty-one".