853750042 has 4 divisors (see below), whose sum is σ = 1280625066. Its totient is φ = 426875020.

The previous prime is 853750019. The next prime is 853750063. The reversal of 853750042 is 240057358.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240057358 = 2 ⋅120028679.

It can be written as a sum of positive squares in only one way, i.e., 853749961 + 81 = 29219^2 + 9^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213437509 + ... + 213437512.

Almost surely, 2^853750042 is an apocalyptic number.

853750042 is a deficient number, since it is larger than the sum of its proper divisors (426875024).

853750042 is a wasteful number, since it uses less digits than its factorization.

853750042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426875023.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 853750042 is about 29219.0013860844. The cubic root of 853750042 is about 948.6592506834.

The spelling of 853750042 in words is "eight hundred fifty-three million, seven hundred fifty thousand, forty-two".