19157042 has 8 divisors (see below), whose sum is σ = 29164656. Its totient is φ = 9435492.

The previous prime is 19157041. The next prime is 19157051. The reversal of 19157042 is 24075191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 19156996 and 19157014.

It is not an unprimeable number, because it can be changed into a prime (19157041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71348 + ... + 71615.

It is an arithmetic number, because the mean of its divisors is an integer number (3645582).

Almost surely, 2^19157042 is an apocalyptic number.

19157042 is a deficient number, since it is larger than the sum of its proper divisors (10007614).

19157042 is a wasteful number, since it uses less digits than its factorization.

19157042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143032.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 19157042 is about 4376.8758264315. The cubic root of 19157042 is about 267.5733260421.

The spelling of 19157042 in words is "nineteen million, one hundred fifty-seven thousand, forty-two".