142151461 has 4 divisors (see below), whose sum is σ = 146737024. Its totient is φ = 137565900.

The previous prime is 142151381. The next prime is 142151479. The reversal of 142151461 is 164151241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 164151241 = 19 ⋅8639539.

It is a cyclic number.

It is not a de Polignac number, because 142151461 - 2¹⁹ = 141627173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142151491) 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 3 ways as a sum of consecutive naturals, for example, 2292735 + ... + 2292796.

It is an arithmetic number, because the mean of its divisors is an integer number (36684256).

Almost surely, 2^142151461 is an apocalyptic number.

It is an amenable number.

142151461 is a deficient number, since it is larger than the sum of its proper divisors (4585563).

142151461 is an equidigital number, since it uses as much as digits as its factorization.

142151461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4585562.

The product of its digits is 960, while the sum is 25.

The square root of 142151461 is about 11922.7287564550. The cubic root of 142151461 is about 521.8957687887.

The spelling of 142151461 in words is "one hundred forty-two million, one hundred fifty-one thousand, four hundred sixty-one".