542221451 has 8 divisors (see below), whose sum is σ = 545520960. Its totient is φ = 538931008.

The previous prime is 542221447. The next prime is 542221483. The reversal of 542221451 is 154122245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 542221451 - 2² = 542221447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 542221451.

It is not an unprimeable number, because it can be changed into a prime (542220451) 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 in 7 ways as a sum of consecutive naturals, for example, 145625 + ... + 149301.

It is an arithmetic number, because the mean of its divisors is an integer number (68190120).

Almost surely, 2^542221451 is an apocalyptic number.

542221451 is a deficient number, since it is larger than the sum of its proper divisors (3299509).

542221451 is a wasteful number, since it uses less digits than its factorization.

542221451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4533.

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

The square root of 542221451 is about 23285.6490354038. The cubic root of 542221451 is about 815.4404138516.

Adding to 542221451 its reverse (154122245), we get a palindrome (696343696).

The spelling of 542221451 in words is "five hundred forty-two million, two hundred twenty-one thousand, four hundred fifty-one".