3121842 has 8 divisors (see below), whose sum is σ = 6243696. Its totient is φ = 1040612.

The previous prime is 3121841. The next prime is 3121873. The reversal of 3121842 is 2481213.

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

3121842 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (3121841) 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, 260148 + ... + 260159.

It is an arithmetic number, because the mean of its divisors is an integer number (780462).

Almost surely, 2^3121842 is an apocalyptic number.

3121842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3121842 is a wasteful number, since it uses less digits than its factorization.

3121842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520312.

The product of its digits is 384, while the sum is 21.

The square root of 3121842 is about 1766.8735099039. The cubic root of 3121842 is about 146.1516220558.

The spelling of 3121842 in words is "three million, one hundred twenty-one thousand, eight hundred forty-two".