42231499 has 2 divisors, whose sum is σ = 42231500. Its totient is φ = 42231498.

The previous prime is 42231491. The next prime is 42231559. The reversal of 42231499 is 99413224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42231499 - 2³ = 42231491 is a prime.

It is not a weakly prime, because it can be changed into another prime (42231491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21115749 + 21115750.

It is an arithmetic number, because the mean of its divisors is an integer number (21115750).

Almost surely, 2^42231499 is an apocalyptic number.

42231499 is a deficient number, since it is larger than the sum of its proper divisors (1).

42231499 is an equidigital number, since it uses as much as digits as its factorization.

42231499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 34.

The square root of 42231499 is about 6498.5766903223. The cubic root of 42231499 is about 348.2401428528.

The spelling of 42231499 in words is "forty-two million, two hundred thirty-one thousand, four hundred ninety-nine".