42479739 has 12 divisors (see below), whose sum is σ = 61425000. Its totient is φ = 28289664.

The previous prime is 42479707. The next prime is 42479741. The reversal of 42479739 is 93797424.

It is not a de Polignac number, because 42479739 - 2⁵ = 42479707 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 42479694 and 42479703.

It is not an unprimeable number, because it can be changed into a prime (42479779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9352 + ... + 13130.

It is an arithmetic number, because the mean of its divisors is an integer number (5118750).

Almost surely, 2^42479739 is an apocalyptic number.

42479739 is a deficient number, since it is larger than the sum of its proper divisors (18945261).

42479739 is a wasteful number, since it uses less digits than its factorization.

42479739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5034 (or 5031 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 42479739 is about 6517.6482721914. The cubic root of 42479739 is about 348.9211377272.

The spelling of 42479739 in words is "forty-two million, four hundred seventy-nine thousand, seven hundred thirty-nine".