9090142 has 4 divisors (see below), whose sum is σ = 13635216. Its totient is φ = 4545070.

The previous prime is 9090139. The next prime is 9090173. The reversal of 9090142 is 2410909.

9090142 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, and also an emirpimes, since its reverse is a distinct semiprime: 2410909 = 1523 ⋅1583.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2272534 + ... + 2272537.

It is an arithmetic number, because the mean of its divisors is an integer number (3408804).

Almost surely, 2^9090142 is an apocalyptic number.

9090142 is a deficient number, since it is larger than the sum of its proper divisors (4545074).

9090142 is a wasteful number, since it uses less digits than its factorization.

9090142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4545073.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 9090142 is about 3014.9862354578. The cubic root of 9090142 is about 208.7005318618.

The spelling of 9090142 in words is "nine million, ninety thousand, one hundred forty-two".