142256401 has 8 divisors (see below), whose sum is σ = 171135680. Its totient is φ = 115516368.

The previous prime is 142256377. The next prime is 142256423. The reversal of 142256401 is 104652241.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 142256401 - 2⁵ = 142256369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142256431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 534666 + ... + 534931.

It is an arithmetic number, because the mean of its divisors is an integer number (21391960).

Almost surely, 2^142256401 is an apocalyptic number.

It is an amenable number.

142256401 is a deficient number, since it is larger than the sum of its proper divisors (28879279).

142256401 is a wasteful number, since it uses less digits than its factorization.

142256401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069623.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 142256401 is about 11927.1287827373. The cubic root of 142256401 is about 522.0241629914.

The spelling of 142256401 in words is "one hundred forty-two million, two hundred fifty-six thousand, four hundred one".