142652381 has 2 divisors, whose sum is σ = 142652382. Its totient is φ = 142652380.

The previous prime is 142652357. The next prime is 142652413. The reversal of 142652381 is 183256241.

It is an a-pointer prime, because the next prime (142652413) can be obtained adding 142652381 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141824281 + 828100 = 11909^2 + 910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142652381 is a prime.

It is a super-2 number, since 2×142652381² = 40699403609938322, which contains 22 as substring.

It is a Chen prime.

It is equal to p_8053484 and since 142652381 and 8053484 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142652281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71326190 + 71326191.

It is an arithmetic number, because the mean of its divisors is an integer number (71326191).

Almost surely, 2^142652381 is an apocalyptic number.

It is an amenable number.

142652381 is a deficient number, since it is larger than the sum of its proper divisors (1).

142652381 is an equidigital number, since it uses as much as digits as its factorization.

142652381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 32.

The square root of 142652381 is about 11943.7172186887. The cubic root of 142652381 is about 522.5080770712.

The spelling of 142652381 in words is "one hundred forty-two million, six hundred fifty-two thousand, three hundred eighty-one".