7457542 has 8 divisors (see below), whose sum is σ = 11203776. Its totient is φ = 3722952.

The previous prime is 7457503. The next prime is 7457561. The reversal of 7457542 is 2457547.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×7457542² = 111229865363528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7457498 and 7457507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1078 + ... + 4009.

It is an arithmetic number, because the mean of its divisors is an integer number (1400472).

Almost surely, 2^7457542 is an apocalyptic number.

7457542 is a deficient number, since it is larger than the sum of its proper divisors (3746234).

7457542 is a wasteful number, since it uses less digits than its factorization.

7457542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5822.

The product of its digits is 39200, while the sum is 34.

The square root of 7457542 is about 2730.8500508084. The cubic root of 7457542 is about 195.3733107328.

The spelling of 7457542 in words is "seven million, four hundred fifty-seven thousand, five hundred forty-two".