42072386 has 8 divisors (see below), whose sum is σ = 63667404. Its totient is φ = 20849920.

The previous prime is 42072377. The next prime is 42072421. The reversal of 42072386 is 68327024.

It can be written as a sum of positive squares in 2 ways, for example, as 42055225 + 17161 = 6485^2 + 131^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 92855 + ... + 93306.

Almost surely, 2^42072386 is an apocalyptic number.

42072386 is a deficient number, since it is larger than the sum of its proper divisors (21595018).

42072386 is a wasteful number, since it uses less digits than its factorization.

42072386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186276.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 42072386 is about 6486.3229953495. The cubic root of 42072386 is about 347.8022448472.

The spelling of 42072386 in words is "forty-two million, seventy-two thousand, three hundred eighty-six".