142489433 has 2 divisors, whose sum is σ = 142489434. Its totient is φ = 142489432.

The previous prime is 142489429. The next prime is 142489447. The reversal of 142489433 is 334984241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140944384 + 1545049 = 11872^2 + 1243^2 .

It is a cyclic number.

It is not a de Polignac number, because 142489433 - 2² = 142489429 is a prime.

It is a super-2 number, since 2×142489433² = 40606477033322978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142489933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71244716 + 71244717.

It is an arithmetic number, because the mean of its divisors is an integer number (71244717).

Almost surely, 2^142489433 is an apocalyptic number.

It is an amenable number.

142489433 is a deficient number, since it is larger than the sum of its proper divisors (1).

142489433 is an equidigital number, since it uses as much as digits as its factorization.

142489433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 38.

The square root of 142489433 is about 11936.8937751829. The cubic root of 142489433 is about 522.3090522705.

The spelling of 142489433 in words is "one hundred forty-two million, four hundred eighty-nine thousand, four hundred thirty-three".