142951091 has 8 divisors (see below), whose sum is σ = 147125664. Its totient is φ = 138792960.

The previous prime is 142951043. The next prime is 142951093. The reversal of 142951091 is 190159241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142951091 - 2⁶ = 142951027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142951093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14771 + ... + 22451.

It is an arithmetic number, because the mean of its divisors is an integer number (18390708).

Almost surely, 2^142951091 is an apocalyptic number.

142951091 is a deficient number, since it is larger than the sum of its proper divisors (4174573).

142951091 is an equidigital number, since it uses as much as digits as its factorization.

142951091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8221.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 142951091 is about 11956.2155801909. The cubic root of 142951091 is about 522.8725284551.

The spelling of 142951091 in words is "one hundred forty-two million, nine hundred fifty-one thousand, ninety-one".