542393623 has 2 divisors, whose sum is σ = 542393624. Its totient is φ = 542393622.

The previous prime is 542393611. The next prime is 542393647. The reversal of 542393623 is 326393245.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542393623 is a prime.

It is a super-2 number, since 2×542393623² = 588381684542132258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542393603) by changing a digit.

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 as a sum of consecutive naturals, namely, 271196811 + 271196812.

It is an arithmetic number, because the mean of its divisors is an integer number (271196812).

Almost surely, 2^542393623 is an apocalyptic number.

542393623 is a deficient number, since it is larger than the sum of its proper divisors (1).

542393623 is an equidigital number, since it uses as much as digits as its factorization.

542393623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 37.

The square root of 542393623 is about 23289.3456971208. The cubic root of 542393623 is about 815.5267138613.

The spelling of 542393623 in words is "five hundred forty-two million, three hundred ninety-three thousand, six hundred twenty-three".