70042273 has 4 divisors (see below), whose sum is σ = 80048320. Its totient is φ = 60036228.

The previous prime is 70042249. The next prime is 70042327. The reversal of 70042273 is 37224007.

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 de Polignac number, because none of the positive numbers 2^k-70042273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70042373) 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, 5003013 + ... + 5003026.

It is an arithmetic number, because the mean of its divisors is an integer number (20012080).

Almost surely, 2^70042273 is an apocalyptic number.

It is an amenable number.

70042273 is a deficient number, since it is larger than the sum of its proper divisors (10006047).

70042273 is a wasteful number, since it uses less digits than its factorization.

70042273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10006046.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 70042273 is about 8369.1261789986. The cubic root of 70042273 is about 412.2114747594.

The spelling of 70042273 in words is "seventy million, forty-two thousand, two hundred seventy-three".