169157142 has 144 divisors (see below), whose sum is σ = 475877376. Its totient is φ = 42184800.

The previous prime is 169157137. The next prime is 169157243. The reversal of 169157142 is 241751961.

It is a super-2 number, since 2×169157142² = 57228277379216328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 169157097 and 169157106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1331883 + ... + 1332009.

It is an arithmetic number, because the mean of its divisors is an integer number (3304704).

Almost surely, 2^169157142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169157142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237938688).

169157142 is an abundant number, since it is smaller than the sum of its proper divisors (306720234).

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

169157142 is a wasteful number, since it uses less digits than its factorization.

169157142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 181 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 169157142 is about 13006.0425187680. The cubic root of 169157142 is about 553.0487897683.

The spelling of 169157142 in words is "one hundred sixty-nine million, one hundred fifty-seven thousand, one hundred forty-two".