42191613 has 12 divisors (see below), whose sum is σ = 61015968. Its totient is φ = 28094280.

The previous prime is 42191599. The next prime is 42191623. The reversal of 42191613 is 31619124.

42191613 is a `hidden beast` number, since 42 + 1 + 9 + 1 + 613 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-42191613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42191623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7006 + ... + 11552.

It is an arithmetic number, because the mean of its divisors is an integer number (5084664).

Almost surely, 2^42191613 is an apocalyptic number.

It is an amenable number.

42191613 is a deficient number, since it is larger than the sum of its proper divisors (18824355).

42191613 is a wasteful number, since it uses less digits than its factorization.

42191613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5584 (or 5581 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 42191613 is about 6495.5071395542. The cubic root of 42191613 is about 348.1304752525.

It can be divided in two parts, 4219 and 1613, that added together give a cube (5832 = 18³).

The spelling of 42191613 in words is "forty-two million, one hundred ninety-one thousand, six hundred thirteen".