42531899 has 8 divisors (see below), whose sum is σ = 46717440. Its totient is φ = 38541096.

The previous prime is 42531889. The next prime is 42531947. The reversal of 42531899 is 99813524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42531899 - 2¹² = 42527803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42531809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48227 + ... + 49100.

It is an arithmetic number, because the mean of its divisors is an integer number (5839680).

Almost surely, 2^42531899 is an apocalyptic number.

42531899 is a deficient number, since it is larger than the sum of its proper divisors (4185541).

42531899 is a wasteful number, since it uses less digits than its factorization.

42531899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97369.

The product of its digits is 77760, while the sum is 41.

The square root of 42531899 is about 6521.6484879208. The cubic root of 42531899 is about 349.0638903510.

The spelling of 42531899 in words is "forty-two million, five hundred thirty-one thousand, eight hundred ninety-nine".