7128542 has 16 divisors (see below), whose sum is σ = 11485152. Its totient is φ = 3306240.

The previous prime is 7128533. The next prime is 7128581. The reversal of 7128542 is 2458217.

It is a super-2 number, since 2×7128542² = 101632222091528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 938 + ... + 3890.

It is an arithmetic number, because the mean of its divisors is an integer number (717822).

Almost surely, 2^7128542 is an apocalyptic number.

7128542 is a deficient number, since it is larger than the sum of its proper divisors (4356610).

7128542 is a wasteful number, since it uses less digits than its factorization.

7128542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3043.

The product of its digits is 4480, while the sum is 29.

The square root of 7128542 is about 2669.9329579598. The cubic root of 7128542 is about 192.4569375763.

The spelling of 7128542 in words is "seven million, one hundred twenty-eight thousand, five hundred forty-two".