7542381 has 32 divisors (see below), whose sum is σ = 12699648. Its totient is φ = 3867840.

The previous prime is 7542347. The next prime is 7542389. The reversal of 7542381 is 1832457.

It is not a de Polignac number, because 7542381 - 2⁶ = 7542317 is a prime.

It is a super-2 number, since 2×7542381² = 113775022298322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7542389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23635 + ... + 23951.

It is an arithmetic number, because the mean of its divisors is an integer number (396864).

Almost surely, 2^7542381 is an apocalyptic number.

It is an amenable number.

7542381 is a deficient number, since it is larger than the sum of its proper divisors (5157267).

7542381 is a wasteful number, since it uses less digits than its factorization.

7542381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441.

The product of its digits is 6720, while the sum is 30.

The square root of 7542381 is about 2746.3395638559. The cubic root of 7542381 is about 196.1113919774. Note that the first 3 decimals are identical.

The spelling of 7542381 in words is "seven million, five hundred forty-two thousand, three hundred eighty-one".