142256451 has 8 divisors (see below), whose sum is σ = 193711104. Its totient is φ = 92819720.

The previous prime is 142256441. The next prime is 142256483. The reversal of 142256451 is 154652241.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142256451 is a prime.

It is a super-2 number, since 2×142256451² = 40473795702230802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142256431) 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, 504315 + ... + 504596.

It is an arithmetic number, because the mean of its divisors is an integer number (24213888).

Almost surely, 2^142256451 is an apocalyptic number.

142256451 is a deficient number, since it is larger than the sum of its proper divisors (51454653).

142256451 is a wasteful number, since it uses less digits than its factorization.

142256451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008961.

The product of its digits is 9600, while the sum is 30.

The square root of 142256451 is about 11927.1308787990. The cubic root of 142256451 is about 522.0242241514.

The spelling of 142256451 in words is "one hundred forty-two million, two hundred fifty-six thousand, four hundred fifty-one".