2142315442 has 4 divisors (see below), whose sum is σ = 3213473166. Its totient is φ = 1071157720.

The previous prime is 2142315389. The next prime is 2142315449. The reversal of 2142315442 is 2445132412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1699170841 + 443144601 = 41221^2 + 21051^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2142315442.

It is not an unprimeable number, because it can be changed into a prime (2142315449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535578859 + ... + 535578862.

Almost surely, 2^2142315442 is an apocalyptic number.

2142315442 is a deficient number, since it is larger than the sum of its proper divisors (1071157724).

2142315442 is a wasteful number, since it uses less digits than its factorization.

2142315442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071157723.

The product of its digits is 7680, while the sum is 28.

The square root of 2142315442 is about 46285.1535808190. The cubic root of 2142315442 is about 1289.1233436446.

Adding to 2142315442 its reverse (2445132412), we get a palindrome (4587447854).

The spelling of 2142315442 in words is "two billion, one hundred forty-two million, three hundred fifteen thousand, four hundred forty-two".