70123210 has 16 divisors (see below), whose sum is σ = 126319176. Its totient is φ = 28027648.

The previous prime is 70123117. The next prime is 70123213. The reversal of 70123210 is 1232107.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 52809289 + 17313921 = 7267^2 + 4161^2 .

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (70123213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19902 + ... + 23158.

Almost surely, 2^70123210 is an apocalyptic number.

70123210 is a deficient number, since it is larger than the sum of its proper divisors (56195966).

70123210 is a wasteful number, since it uses less digits than its factorization.

70123210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5417.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 70123210 is about 8373.9602339634. The cubic root of 70123210 is about 412.3701899470.

Adding to 70123210 its reverse (1232107), we get a palindrome (71355317).

The spelling of 70123210 in words is "seventy million, one hundred twenty-three thousand, two hundred ten".