42380657 has 4 divisors (see below), whose sum is σ = 46233456. Its totient is φ = 38527860.

The previous prime is 42380647. The next prime is 42380669. The reversal of 42380657 is 75608324.

It is a happy number.

42380657 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 42380657 - 2⁴ = 42380641 is a prime.

It is a super-2 number, since 2×42380657² = 3592240175503298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42380647) 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, 1926383 + ... + 1926404.

It is an arithmetic number, because the mean of its divisors is an integer number (11558364).

Almost surely, 2^42380657 is an apocalyptic number.

It is an amenable number.

42380657 is a deficient number, since it is larger than the sum of its proper divisors (3852799).

42380657 is a wasteful number, since it uses less digits than its factorization.

42380657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3852798.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 42380657 is about 6510.0427801974. The cubic root of 42380657 is about 348.6496458042.

The spelling of 42380657 in words is "forty-two million, three hundred eighty thousand, six hundred fifty-seven".