142444417251 has 8 divisors (see below), whose sum is σ = 192527614480. Its totient is φ = 93662082432.

The previous prime is 142444417249. The next prime is 142444417261. The reversal of 142444417251 is 152714444241.

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

It is not a de Polignac number, because 142444417251 - 2¹ = 142444417249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142444417201) 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, 325215346 + ... + 325215783.

It is an arithmetic number, because the mean of its divisors is an integer number (24065951810).

Almost surely, 2^142444417251 is an apocalyptic number.

142444417251 is a deficient number, since it is larger than the sum of its proper divisors (50083197229).

142444417251 is an equidigital number, since it uses as much as digits as its factorization.

142444417251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650431205.

The product of its digits is 143360, while the sum is 39.

The spelling of 142444417251 in words is "one hundred forty-two billion, four hundred forty-four million, four hundred seventeen thousand, two hundred fifty-one".