42253786 has 4 divisors (see below), whose sum is σ = 63380682. Its totient is φ = 21126892.

The previous prime is 42253769. The next prime is 42253801. The reversal of 42253786 is 68735224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 41409225 + 844561 = 6435^2 + 919^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10563445 + ... + 10563448.

Almost surely, 2^42253786 is an apocalyptic number.

42253786 is a deficient number, since it is larger than the sum of its proper divisors (21126896).

42253786 is a wasteful number, since it uses less digits than its factorization.

42253786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21126895.

The product of its digits is 80640, while the sum is 37.

The square root of 42253786 is about 6500.2912242453. The cubic root of 42253786 is about 348.3013914734.

It can be divided in two parts, 42 and 253786, that added together give a triangular number (253828 = T₇₁₂).

The spelling of 42253786 in words is "forty-two million, two hundred fifty-three thousand, seven hundred eighty-six".