162521142 has 24 divisors (see below), whose sum is σ = 378111096. Its totient is φ = 46434528.

The previous prime is 162521119. The next prime is 162521143. The reversal of 162521142 is 241125261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162521143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 276103 + ... + 276690.

It is an arithmetic number, because the mean of its divisors is an integer number (15754629).

Almost surely, 2^162521142 is an apocalyptic number.

162521142 is an abundant number, since it is smaller than the sum of its proper divisors (215589954).

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

162521142 is a wasteful number, since it uses less digits than its factorization.

162521142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552812 (or 552805 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 162521142 is about 12748.3780144770. The cubic root of 162521142 is about 545.7201063795.

The spelling of 162521142 in words is "one hundred sixty-two million, five hundred twenty-one thousand, one hundred forty-two".