542221415 has 4 divisors (see below), whose sum is σ = 650665704. Its totient is φ = 433777128.

The previous prime is 542221399. The next prime is 542221423. The reversal of 542221415 is 514122245.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 542221415 - 2⁴ = 542221399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54222137 + ... + 54222146.

It is an arithmetic number, because the mean of its divisors is an integer number (162666426).

Almost surely, 2^542221415 is an apocalyptic number.

542221415 is a deficient number, since it is larger than the sum of its proper divisors (108444289).

542221415 is a wasteful number, since it uses less digits than its factorization.

542221415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108444288.

The product of its digits is 3200, while the sum is 26.

The square root of 542221415 is about 23285.6482623954. The cubic root of 542221415 is about 815.4403958049.

The spelling of 542221415 in words is "five hundred forty-two million, two hundred twenty-one thousand, four hundred fifteen".