42251693 has 4 divisors (see below), whose sum is σ = 46092768. Its totient is φ = 38410620.

The previous prime is 42251639. The next prime is 42251701. The reversal of 42251693 is 39615224.

It is a happy number.

42251693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42251693 - 2²⁰ = 41203117 is a prime.

It is a super-2 number, since 2×42251693² = 3570411122732498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42251623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1920521 + ... + 1920542.

It is an arithmetic number, because the mean of its divisors is an integer number (11523192).

Almost surely, 2^42251693 is an apocalyptic number.

It is an amenable number.

42251693 is a deficient number, since it is larger than the sum of its proper divisors (3841075).

42251693 is a wasteful number, since it uses less digits than its factorization.

42251693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3841074.

The product of its digits is 12960, while the sum is 32.

The square root of 42251693 is about 6500.1302294646. The cubic root of 42251693 is about 348.2956404554.

The spelling of 42251693 in words is "forty-two million, two hundred fifty-one thousand, six hundred ninety-three".