142113451 has 4 divisors (see below), whose sum is σ = 142147792. Its totient is φ = 142079112.

The previous prime is 142113401. The next prime is 142113467. The reversal of 142113451 is 154311241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142113451 - 2⁹ = 142112939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142113401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9951 + ... + 19576.

It is an arithmetic number, because the mean of its divisors is an integer number (35536948).

Almost surely, 2^142113451 is an apocalyptic number.

142113451 is a deficient number, since it is larger than the sum of its proper divisors (34341).

142113451 is an equidigital number, since it uses as much as digits as its factorization.

142113451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34340.

The product of its digits is 480, while the sum is 22.

The square root of 142113451 is about 11921.1346355957. The cubic root of 142113451 is about 521.8492479243.

Adding to 142113451 its reverse (154311241), we get a palindrome (296424692).

The spelling of 142113451 in words is "one hundred forty-two million, one hundred thirteen thousand, four hundred fifty-one".