120171402 has 72 divisors (see below), whose sum is σ = 298031916. Its totient is φ = 34781184.

The previous prime is 120171391. The next prime is 120171413. The reversal of 120171402 is 204171021.

It is an interprime number because it is at equal distance from previous prime (120171391) and next prime (120171413).

It can be written as a sum of positive squares in 6 ways, for example, as 72437121 + 47734281 = 8511^2 + 6909^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 66738 + ... + 68514.

Almost surely, 2^120171402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120171402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149015958).

120171402 is an abundant number, since it is smaller than the sum of its proper divisors (177860514).

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

120171402 is a wasteful number, since it uses less digits than its factorization.

120171402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832 (or 1812 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 120171402 is about 10962.2717536102. The cubic root of 120171402 is about 493.4771440775.

The spelling of 120171402 in words is "one hundred twenty million, one hundred seventy-one thousand, four hundred two".