142121043 has 6 divisors (see below), whose sum is σ = 205285964. Its totient is φ = 94747356.

The previous prime is 142121027. The next prime is 142121051. The reversal of 142121043 is 340121241.

It is not a de Polignac number, because 142121043 - 2⁴ = 142121027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142161043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7895605 + ... + 7895622.

Almost surely, 2^142121043 is an apocalyptic number.

142121043 is a deficient number, since it is larger than the sum of its proper divisors (63164921).

142121043 is a wasteful number, since it uses less digits than its factorization.

142121043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15791233 (or 15791230 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 142121043 is about 11921.4530574087. The cubic root of 142121043 is about 521.8585405210.

Adding to 142121043 its reverse (340121241), we get a palindrome (482242284).

The spelling of 142121043 in words is "one hundred forty-two million, one hundred twenty-one thousand, forty-three".