210423639040 has 88 divisors (see below), whose sum is σ = 534462725952. Its totient is φ = 79218278400.

The previous prime is 210423639031. The next prime is 210423639071. The reversal of 210423639040 is 40936324012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 210423638987 and 210423639005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1121736 + ... + 1295815.

Almost surely, 2^210423639040 is an apocalyptic number.

210423639040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210423639040 is an abundant number, since it is smaller than the sum of its proper divisors (324039086912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210423639040 is a wasteful number, since it uses less digits than its factorization.

210423639040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417593 (or 2417575 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The spelling of 210423639040 in words is "two hundred ten billion, four hundred twenty-three million, six hundred thirty-nine thousand, forty".