42691933 has 16 divisors (see below), whose sum is σ = 46204416. Its totient is φ = 39346560.

The previous prime is 42691919. The next prime is 42691951. The reversal of 42691933 is 33919624.

It is not a de Polignac number, because 42691933 - 2²¹ = 40594781 is a prime.

It is a super-2 number, since 2×42691933² = 3645202286552978, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42691892 and 42691901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42631933) 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, 78643 + ... + 79183.

It is an arithmetic number, because the mean of its divisors is an integer number (2887776).

Almost surely, 2^42691933 is an apocalyptic number.

It is an amenable number.

42691933 is a deficient number, since it is larger than the sum of its proper divisors (3512483).

42691933 is a wasteful number, since it uses less digits than its factorization.

42691933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684.

The product of its digits is 34992, while the sum is 37.

The square root of 42691933 is about 6533.9064119407. The cubic root of 42691933 is about 349.5011478312.

The spelling of 42691933 in words is "forty-two million, six hundred ninety-one thousand, nine hundred thirty-three".