142244261 has 2 divisors, whose sum is σ = 142244262. Its totient is φ = 142244260.

The previous prime is 142244257. The next prime is 142244299. The reversal of 142244261 is 162442241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112487236 + 29757025 = 10606^2 + 5455^2 .

It is a cyclic number.

It is not a de Polignac number, because 142244261 - 2² = 142244257 is a prime.

It is a super-2 number, since 2×142244261² = 40466859574872242, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142244261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142244251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71122130 + 71122131.

It is an arithmetic number, because the mean of its divisors is an integer number (71122131).

Almost surely, 2^142244261 is an apocalyptic number.

It is an amenable number.

142244261 is a deficient number, since it is larger than the sum of its proper divisors (1).

142244261 is an equidigital number, since it uses as much as digits as its factorization.

142244261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 26.

The square root of 142244261 is about 11926.6198480542. The cubic root of 142244261 is about 522.0093129189.

The spelling of 142244261 in words is "one hundred forty-two million, two hundred forty-four thousand, two hundred sixty-one".