13111942 has 4 divisors (see below), whose sum is σ = 19667916. Its totient is φ = 6555970.

The previous prime is 13111933. The next prime is 13111951. The reversal of 13111942 is 24911131.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13111933) and next prime (13111951).

It is a super-2 number, since 2×13111942² = 343846046022728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3277984 + ... + 3277987.

It is an arithmetic number, because the mean of its divisors is an integer number (4916979).

Almost surely, 2^13111942 is an apocalyptic number.

13111942 is a deficient number, since it is larger than the sum of its proper divisors (6555974).

13111942 is an equidigital number, since it uses as much as digits as its factorization.

13111942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6555973.

The product of its digits is 216, while the sum is 22.

The square root of 13111942 is about 3621.0415628656. The cubic root of 13111942 is about 235.8064462044.

The spelling of 13111942 in words is "thirteen million, one hundred eleven thousand, nine hundred forty-two".