3121120342 has 16 divisors (see below), whose sum is σ = 4832966160. Its totient is φ = 1510774272.

The previous prime is 3121120319. The next prime is 3121120349. The reversal of 3121120342 is 2430211213.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121120349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150867 + ... + 170302.

It is an arithmetic number, because the mean of its divisors is an integer number (302060385).

Almost surely, 2^3121120342 is an apocalyptic number.

3121120342 is a deficient number, since it is larger than the sum of its proper divisors (1711845818).

3121120342 is a wasteful number, since it uses less digits than its factorization.

3121120342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321327.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 3121120342 is about 55866.9879445814. The cubic root of 3121120342 is about 1461.4035951534.

Adding to 3121120342 its reverse (2430211213), we get a palindrome (5551331555).

The spelling of 3121120342 in words is "three billion, one hundred twenty-one million, one hundred twenty thousand, three hundred forty-two".