7811942 has 8 divisors (see below), whose sum is σ = 12407256. Its totient is φ = 3676192.

The previous prime is 7811941. The next prime is 7811953. The reversal of 7811942 is 2491187.

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

It is a super-2 number, since 2×7811942² = 122052875622728, which contains 22 as substring.

It is a zygodrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 7811899 and 7811908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7811941) 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, 114848 + ... + 114915.

It is an arithmetic number, because the mean of its divisors is an integer number (1550907).

Almost surely, 2^7811942 is an apocalyptic number.

7811942 is a deficient number, since it is larger than the sum of its proper divisors (4595314).

7811942 is a wasteful number, since it uses less digits than its factorization.

7811942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229782.

The product of its digits is 4032, while the sum is 32.

The square root of 7811942 is about 2794.9851520178. The cubic root of 7811942 is about 198.4204072780.

The spelling of 7811942 in words is "seven million, eight hundred eleven thousand, nine hundred forty-two".