542503221 has 32 divisors (see below), whose sum is σ = 795475968. Its totient is φ = 326842560.

The previous prime is 542503207. The next prime is 542503229. The reversal of 542503221 is 122305245.

It is not a de Polignac number, because 542503221 - 2²³ = 534114613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 542503191 and 542503200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542503229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 498540 + ... + 499626.

It is an arithmetic number, because the mean of its divisors is an integer number (24858624).

Almost surely, 2^542503221 is an apocalyptic number.

It is an amenable number.

542503221 is a deficient number, since it is larger than the sum of its proper divisors (252972747).

542503221 is a wasteful number, since it uses less digits than its factorization.

542503221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 542503221 is about 23291.6985426138. The cubic root of 542503221 is about 815.5816395792.

Adding to 542503221 its reverse (122305245), we get a palindrome (664808466).

The spelling of 542503221 in words is "five hundred forty-two million, five hundred three thousand, two hundred twenty-one".