210142723 has 10 divisors (see below), whose sum is σ = 245154724. Its totient is φ = 180120276.

The previous prime is 210142711. The next prime is 210142739. The reversal of 210142723 is 327241012.

It is not a de Polignac number, because 210142723 - 2¹³ = 210134531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210142694 and 210142703.

It is not an unprimeable number, because it can be changed into a prime (210142703) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 41361 + ... + 46162.

Almost surely, 2^210142723 is an apocalyptic number.

210142723 is a deficient number, since it is larger than the sum of its proper divisors (35012001).

210142723 is an frugal number, since it uses more digits than its factorization.

210142723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87551 (or 87530 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 210142723 is about 14496.3003211164. The cubic root of 210142723 is about 594.5268210319.

Adding to 210142723 its reverse (327241012), we get a palindrome (537383735).

The spelling of 210142723 in words is "two hundred ten million, one hundred forty-two thousand, seven hundred twenty-three".