42770873 has 4 divisors (see below), whose sum is σ = 42894480. Its totient is φ = 42647268.

The previous prime is 42770851. The next prime is 42770879. The reversal of 42770873 is 37807724.

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 42770873 - 2⁶ = 42770809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42770879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61283 + ... + 61976.

It is an arithmetic number, because the mean of its divisors is an integer number (10723620).

Almost surely, 2^42770873 is an apocalyptic number.

It is an amenable number.

42770873 is a deficient number, since it is larger than the sum of its proper divisors (123607).

42770873 is a wasteful number, since it uses less digits than its factorization.

42770873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123606.

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 42770873 is about 6539.9444187241. The cubic root of 42770873 is about 349.7164315406.

The spelling of 42770873 in words is "forty-two million, seven hundred seventy thousand, eight hundred seventy-three".