7142870 has 32 divisors (see below), whose sum is σ = 14923008. Its totient is φ = 2410848.

The previous prime is 7142869. The next prime is 7142881. The reversal of 7142870 is 782417.

It is a Curzon number.

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, 3929 + ... + 5451.

It is an arithmetic number, because the mean of its divisors is an integer number (466344).

Almost surely, 2^7142870 is an apocalyptic number.

7142870 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7142870 is an abundant number, since it is smaller than the sum of its proper divisors (7780138).

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

7142870 is a wasteful number, since it uses less digits than its factorization.

7142870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 7142870 is about 2672.6148244743. The cubic root of 7142870 is about 192.5857941068.

The spelling of 7142870 in words is "seven million, one hundred forty-two thousand, eight hundred seventy".