162402121 has 6 divisors (see below), whose sum is σ = 188916810. Its totient is φ = 139201776.

The previous prime is 162402113. The next prime is 162402133. The reversal of 162402121 is 121204261.

162402121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 133726096 + 28676025 = 11564^2 + 5355^2 .

It is not a de Polignac number, because 162402121 - 2³ = 162402113 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162402181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1657116 + ... + 1657213.

It is an arithmetic number, because the mean of its divisors is an integer number (31486135).

Almost surely, 2^162402121 is an apocalyptic number.

It is an amenable number.

162402121 is a deficient number, since it is larger than the sum of its proper divisors (26514689).

162402121 is an equidigital number, since it uses as much as digits as its factorization.

162402121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3314343 (or 3314336 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 162402121 is about 12743.7090754615. The cubic root of 162402121 is about 545.5868559930.

Adding to 162402121 its reverse (121204261), we get a palindrome (283606382).

The spelling of 162402121 in words is "one hundred sixty-two million, four hundred two thousand, one hundred twenty-one".