542991375 has 24 divisors (see below), whose sum is σ = 978834480. Its totient is φ = 289594800.

The previous prime is 542991359. The next prime is 542991377. The reversal of 542991375 is 573199245.

It is a happy number.

542991375 is a `hidden beast` number, since 542 + 99 + 13 + 7 + 5 = 666.

It is not a de Polignac number, because 542991375 - 2⁴ = 542991359 is a prime.

It is a super-4 number, since 4×542991375⁴ (a number of 36 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 542991375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542991377) 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 23 ways as a sum of consecutive naturals, for example, 240205 + ... + 242454.

It is an arithmetic number, because the mean of its divisors is an integer number (40784770).

Almost surely, 2^542991375 is an apocalyptic number.

542991375 is a deficient number, since it is larger than the sum of its proper divisors (435843105).

542991375 is a wasteful number, since it uses less digits than its factorization.

542991375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482680 (or 482667 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 542991375 is about 23302.1753276384. The cubic root of 542991375 is about 815.8261911747.

The spelling of 542991375 in words is "five hundred forty-two million, nine hundred ninety-one thousand, three hundred seventy-five".