3215522142 has 24 divisors (see below), whose sum is σ = 7962245616. Its totient is φ = 918720576.

The previous prime is 3215522131. The next prime is 3215522147. The reversal of 3215522142 is 2412255123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3215522147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12759883 + ... + 12760134.

It is an arithmetic number, because the mean of its divisors is an integer number (331760234).

Almost surely, 2^3215522142 is an apocalyptic number.

3215522142 is an abundant number, since it is smaller than the sum of its proper divisors (4746723474).

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

3215522142 is a wasteful number, since it uses less digits than its factorization.

3215522142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25520032 (or 25520029 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 3215522142 is about 56705.5741704464. The cubic root of 3215522142 is about 1475.9914264600.

Adding to 3215522142 its reverse (2412255123), we get a palindrome (5627777265).

The spelling of 3215522142 in words is "three billion, two hundred fifteen million, five hundred twenty-two thousand, one hundred forty-two".