7902142 has 4 divisors (see below), whose sum is σ = 11853216. Its totient is φ = 3951070.

The previous prime is 7902137. The next prime is 7902143. The reversal of 7902142 is 2412097.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2412097 = 59 ⋅40883.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7902143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1975534 + ... + 1975537.

It is an arithmetic number, because the mean of its divisors is an integer number (2963304).

Almost surely, 2^7902142 is an apocalyptic number.

7902142 is a deficient number, since it is larger than the sum of its proper divisors (3951074).

7902142 is a wasteful number, since it uses less digits than its factorization.

7902142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3951073.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 7902142 is about 2811.0748833854. The cubic root of 7902142 is about 199.1811688193.

The spelling of 7902142 in words is "seven million, nine hundred two thousand, one hundred forty-two".