70109423 has 4 divisors (see below), whose sum is σ = 70224408. Its totient is φ = 69994440.

The previous prime is 70109401. The next prime is 70109437. The reversal of 70109423 is 32490107.

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

It is a cyclic number.

It is not a de Polignac number, because 70109423 - 2⁸ = 70109167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70109392 and 70109401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70109023) 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, 56573 + ... + 57798.

It is an arithmetic number, because the mean of its divisors is an integer number (17556102).

Almost surely, 2^70109423 is an apocalyptic number.

70109423 is a deficient number, since it is larger than the sum of its proper divisors (114985).

70109423 is a wasteful number, since it uses less digits than its factorization.

70109423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114984.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 70109423 is about 8373.1369868168. The cubic root of 70109423 is about 412.3431626596.

The spelling of 70109423 in words is "seventy million, one hundred nine thousand, four hundred twenty-three".