11971942 has 8 divisors (see below), whose sum is σ = 18443376. Its totient is φ = 5824152.

The previous prime is 11971913. The next prime is 11971943. The reversal of 11971942 is 24917911.

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 = 11971898 and 11971907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11971943) 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, 80818 + ... + 80965.

It is an arithmetic number, because the mean of its divisors is an integer number (2305422).

Almost surely, 2^11971942 is an apocalyptic number.

11971942 is a deficient number, since it is larger than the sum of its proper divisors (6471434).

11971942 is a wasteful number, since it uses less digits than its factorization.

11971942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161822.

The product of its digits is 4536, while the sum is 34.

The square root of 11971942 is about 3460.0494216124. The cubic root of 11971942 is about 228.7642737468.

The spelling of 11971942 in words is "eleven million, nine hundred seventy-one thousand, nine hundred forty-two".