42407599 has 16 divisors (see below), whose sum is σ = 47567520. Its totient is φ = 37537920.

The previous prime is 42407591. The next prime is 42407609. The reversal of 42407599 is 99570424.

It is a cyclic number.

It is not a de Polignac number, because 42407599 - 2³ = 42407591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42407591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73984 + ... + 74554.

It is an arithmetic number, because the mean of its divisors is an integer number (2972970).

Almost surely, 2^42407599 is an apocalyptic number.

42407599 is a deficient number, since it is larger than the sum of its proper divisors (5159921).

42407599 is a wasteful number, since it uses less digits than its factorization.

42407599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 42407599 is about 6512.1117158722. Note that the first 3 decimals coincide. The cubic root of 42407599 is about 348.7235107041.

The spelling of 42407599 in words is "forty-two million, four hundred seven thousand, five hundred ninety-nine".