142374621 has 4 divisors (see below), whose sum is σ = 189832832. Its totient is φ = 94916412.

The previous prime is 142374613. The next prime is 142374629. The reversal of 142374621 is 126473241.

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: 126473241 = 3 ⋅42157747.

It is an interprime number because it is at equal distance from previous prime (142374613) and next prime (142374629).

It is not a de Polignac number, because 142374621 - 2³ = 142374613 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 (142374629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23729101 + ... + 23729106.

It is an arithmetic number, because the mean of its divisors is an integer number (47458208).

Almost surely, 2^142374621 is an apocalyptic number.

It is an amenable number.

142374621 is a deficient number, since it is larger than the sum of its proper divisors (47458211).

142374621 is an equidigital number, since it uses as much as digits as its factorization.

142374621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47458210.

The product of its digits is 8064, while the sum is 30.

The square root of 142374621 is about 11932.0836822409. The cubic root of 142374621 is about 522.1687296767.

The spelling of 142374621 in words is "one hundred forty-two million, three hundred seventy-four thousand, six hundred twenty-one".