13157742 has 32 divisors (see below), whose sum is σ = 29006208. Its totient is φ = 3953376.

The previous prime is 13157737. The next prime is 13157773. The reversal of 13157742 is 24775131.

13157742 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1393 + ... + 5315.

It is an arithmetic number, because the mean of its divisors is an integer number (906444).

Almost surely, 2^13157742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13157742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14503104).

13157742 is an abundant number, since it is smaller than the sum of its proper divisors (15848466).

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

13157742 is a wasteful number, since it uses less digits than its factorization.

13157742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3984.

The product of its digits is 5880, while the sum is 30.

The square root of 13157742 is about 3627.3601971682. The cubic root of 13157742 is about 236.0806843724.

The spelling of 13157742 in words is "thirteen million, one hundred fifty-seven thousand, seven hundred forty-two".