9142140 has 48 divisors (see below), whose sum is σ = 29256192. Its totient is φ = 2089536.

The previous prime is 9142103. The next prime is 9142151. The reversal of 9142140 is 412419.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10464 + ... + 11303.

It is an arithmetic number, because the mean of its divisors is an integer number (609504).

Almost surely, 2^9142140 is an apocalyptic number.

It is an amenable number.

9142140 is an abundant number, since it is smaller than the sum of its proper divisors (20114052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9142140 is a wasteful number, since it uses less digits than its factorization.

9142140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21786 (or 21784 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 9142140 is about 3023.5971953949. The cubic root of 9142140 is about 209.0977161100.

Adding to 9142140 its reverse (412419), we get a palindrome (9554559).

The spelling of 9142140 in words is "nine million, one hundred forty-two thousand, one hundred forty".