142042451 has 8 divisors (see below), whose sum is σ = 144237840. Its totient is φ = 139853952.

The previous prime is 142042447. The next prime is 142042471. The reversal of 142042451 is 154240241.

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 142042451 - 2² = 142042447 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (142042421) 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, 52631 + ... + 55263.

It is an arithmetic number, because the mean of its divisors is an integer number (18029730).

Almost surely, 2^142042451 is an apocalyptic number.

142042451 is a deficient number, since it is larger than the sum of its proper divisors (2195389).

142042451 is an equidigital number, since it uses as much as digits as its factorization.

142042451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3445.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 142042451 is about 11918.1563591019. The cubic root of 142042451 is about 521.7623280061.

Adding to 142042451 its reverse (154240241), we get a palindrome (296282692).

The spelling of 142042451 in words is "one hundred forty-two million, forty-two thousand, four hundred fifty-one".