17157942 has 48 divisors (see below), whose sum is σ = 38892672. Its totient is φ = 5460480.

The previous prime is 17157941. The next prime is 17157953. The reversal of 17157942 is 24975171.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 17157897 and 17157906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17157941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53968 + ... + 54284.

It is an arithmetic number, because the mean of its divisors is an integer number (810264).

Almost surely, 2^17157942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17157942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19446336).

17157942 is an abundant number, since it is smaller than the sum of its proper divisors (21734730).

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

17157942 is a wasteful number, since it uses less digits than its factorization.

17157942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 450 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 17157942 is about 4142.2146250526. The cubic root of 17157942 is about 257.9220063509.

The spelling of 17157942 in words is "seventeen million, one hundred fifty-seven thousand, nine hundred forty-two".