70123501 has 4 divisors (see below), whose sum is σ = 80141152. Its totient is φ = 60105852.

The previous prime is 70123499. The next prime is 70123511. The reversal of 70123501 is 10532107.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10532107 = 53 ⋅198719.

It is a cyclic number.

It is not a de Polignac number, because 70123501 - 2¹ = 70123499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70123511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5008815 + ... + 5008828.

It is an arithmetic number, because the mean of its divisors is an integer number (20035288).

Almost surely, 2^70123501 is an apocalyptic number.

It is an amenable number.

70123501 is a deficient number, since it is larger than the sum of its proper divisors (10017651).

70123501 is a wasteful number, since it uses less digits than its factorization.

70123501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10017650.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 70123501 is about 8373.9776092368. The cubic root of 70123501 is about 412.3707603694.

Adding to 70123501 its reverse (10532107), we get a palindrome (80655608).

The spelling of 70123501 in words is "seventy million, one hundred twenty-three thousand, five hundred one".