142348421 has 4 divisors (see below), whose sum is σ = 142509792. Its totient is φ = 142187052.

The previous prime is 142348417. The next prime is 142348439. The reversal of 142348421 is 124843241.

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: 124843241 = 23 ⋅5427967.

It is a cyclic number.

It is not a de Polignac number, because 142348421 - 2² = 142348417 is a prime.

It is a super-2 number, since 2×142348421² = 40526145922386482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142308421) 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, 79355 + ... + 81128.

It is an arithmetic number, because the mean of its divisors is an integer number (35627448).

Almost surely, 2^142348421 is an apocalyptic number.

It is an amenable number.

142348421 is a deficient number, since it is larger than the sum of its proper divisors (161371).

142348421 is an equidigital number, since it uses as much as digits as its factorization.

142348421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161370.

The product of its digits is 6144, while the sum is 29.

The square root of 142348421 is about 11930.9857513954. The cubic root of 142348421 is about 522.1366976101.

The spelling of 142348421 in words is "one hundred forty-two million, three hundred forty-eight thousand, four hundred twenty-one".