210125442 has 16 divisors (see below), whose sum is σ = 431609472. Its totient is φ = 68148720.

The previous prime is 210125417. The next prime is 210125449. The reversal of 210125442 is 244521012.

It is not an unprimeable number, because it can be changed into a prime (210125449) 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, 473034 + ... + 473477.

It is an arithmetic number, because the mean of its divisors is an integer number (26975592).

Almost surely, 2^210125442 is an apocalyptic number.

210125442 is an abundant number, since it is smaller than the sum of its proper divisors (221484030).

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

210125442 is a wasteful number, since it uses less digits than its factorization.

210125442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946553.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 210125442 is about 14495.7042602283. The cubic root of 210125442 is about 594.5105236960.

Adding to 210125442 its reverse (244521012), we get a palindrome (454646454).

The spelling of 210125442 in words is "two hundred ten million, one hundred twenty-five thousand, four hundred forty-two".