1142213938 has 4 divisors (see below), whose sum is σ = 1713320910. Its totient is φ = 571106968.

The previous prime is 1142213921. The next prime is 1142213953. The reversal of 1142213938 is 8393122411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8393122411 = 17 ⋅493713083.

It can be written as a sum of positive squares in only one way, i.e., 1132120609 + 10093329 = 33647^2 + 3177^2 .

It is a super-2 number, since 2×1142213938² = 2609305360322935688, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285553483 + ... + 285553486.

Almost surely, 2^1142213938 is an apocalyptic number.

1142213938 is a deficient number, since it is larger than the sum of its proper divisors (571106972).

1142213938 is an equidigital number, since it uses as much as digits as its factorization.

1142213938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571106971.

The product of its digits is 10368, while the sum is 34.

The square root of 1142213938 is about 33796.6557221273. The cubic root of 1142213938 is about 1045.3197400745.

The spelling of 1142213938 in words is "one billion, one hundred forty-two million, two hundred thirteen thousand, nine hundred thirty-eight".