42531093 has 48 divisors (see below), whose sum is σ = 72985536. Its totient is φ = 23569920.

The previous prime is 42531061. The next prime is 42531107. The reversal of 42531093 is 39013524.

42531093 is a `hidden beast` number, since 42 + 531 + 0 + 93 = 666.

It is not a de Polignac number, because 42531093 - 2⁵ = 42531061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42531793) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61930 + ... + 62612.

It is an arithmetic number, because the mean of its divisors is an integer number (1520532).

Almost surely, 2^42531093 is an apocalyptic number.

It is an amenable number.

42531093 is a deficient number, since it is larger than the sum of its proper divisors (30454443).

42531093 is a wasteful number, since it uses less digits than its factorization.

42531093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754 (or 751 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 42531093 is about 6521.5866934359. The cubic root of 42531093 is about 349.0616853607.

It can be divided in two parts, 42 and 531093, that added together give a palindrome (531135).

The spelling of 42531093 in words is "forty-two million, five hundred thirty-one thousand, ninety-three".