42499394 has 32 divisors (see below), whose sum is σ = 75119616. Its totient is φ = 17655120.

The previous prime is 42499381. The next prime is 42499397. The reversal of 42499394 is 49399424.

It is not an unprimeable number, because it can be changed into a prime (42499397) 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 15 ways as a sum of consecutive naturals, for example, 136499 + ... + 136809.

It is an arithmetic number, because the mean of its divisors is an integer number (2347488).

Almost surely, 2^42499394 is an apocalyptic number.

42499394 is a deficient number, since it is larger than the sum of its proper divisors (32620222).

42499394 is a wasteful number, since it uses less digits than its factorization.

42499394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590.

The product of its digits is 279936, while the sum is 44.

The square root of 42499394 is about 6519.1559269586. The cubic root of 42499394 is about 348.9749436723.

The spelling of 42499394 in words is "forty-two million, four hundred ninety-nine thousand, three hundred ninety-four".