142207091 has 32 divisors (see below), whose sum is σ = 171497088. Its totient is φ = 116582400.

The previous prime is 142207069. The next prime is 142207099. The reversal of 142207091 is 190702241.

It is not a de Polignac number, because 142207091 - 2⁶ = 142207027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142207091.

It is not an unprimeable number, because it can be changed into a prime (142207099) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 513245 + ... + 513521.

It is an arithmetic number, because the mean of its divisors is an integer number (5359284).

Almost surely, 2^142207091 is an apocalyptic number.

142207091 is a deficient number, since it is larger than the sum of its proper divisors (29289997).

142207091 is a wasteful number, since it uses less digits than its factorization.

142207091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 142207091 is about 11925.0614673468. The cubic root of 142207091 is about 521.9638400205.

The spelling of 142207091 in words is "one hundred forty-two million, two hundred seven thousand, ninety-one".