142144261 has 8 divisors (see below), whose sum is σ = 162523584. Its totient is φ = 121783200.

The previous prime is 142144243. The next prime is 142144273. The reversal of 142144261 is 162441241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142144261 - 2¹⁵ = 142111493 is a prime.

It is a super-2 number, since 2×142144261² = 40409981870472242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142144291) 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 in 7 ways as a sum of consecutive naturals, for example, 24321 + ... + 29593.

It is an arithmetic number, because the mean of its divisors is an integer number (20315448).

Almost surely, 2^142144261 is an apocalyptic number.

It is an amenable number.

142144261 is a deficient number, since it is larger than the sum of its proper divisors (20379323).

142144261 is an equidigital number, since it uses as much as digits as its factorization.

142144261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9131.

The product of its digits is 1536, while the sum is 25.

The square root of 142144261 is about 11922.4268083306. The cubic root of 142144261 is about 521.8869572648.

The spelling of 142144261 in words is "one hundred forty-two million, one hundred forty-four thousand, two hundred sixty-one".