142354991 has 4 divisors (see below), whose sum is σ = 150728832. Its totient is φ = 133981152.

The previous prime is 142354937. The next prime is 142354999. The reversal of 142354991 is 199453241.

142354991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142354991 is a prime.

It is a super-2 number, since 2×142354991² = 40529886925220162, 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 (142354999) 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, 4186895 + ... + 4186928.

It is an arithmetic number, because the mean of its divisors is an integer number (37682208).

Almost surely, 2^142354991 is an apocalyptic number.

142354991 is a deficient number, since it is larger than the sum of its proper divisors (8373841).

142354991 is an equidigital number, since it uses as much as digits as its factorization.

142354991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8373840.

The product of its digits is 38880, while the sum is 38.

The square root of 142354991 is about 11931.2610817130. The cubic root of 142354991 is about 522.1447304479.

The spelling of 142354991 in words is "one hundred forty-two million, three hundred fifty-four thousand, nine hundred ninety-one".