542421400444 has 48 divisors (see below), whose sum is σ = 1183554328320. Its totient is φ = 211317039360.

The previous prime is 542421400441. The next prime is 542421400447. The reversal of 542421400444 is 444004124245.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (542421400441) and next prime (542421400447).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542421400441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4529167 + ... + 4647385.

It is an arithmetic number, because the mean of its divisors is an integer number (24657381840).

Almost surely, 2^542421400444 is an apocalyptic number.

It is an amenable number.

542421400444 is an abundant number, since it is smaller than the sum of its proper divisors (641132927876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

542421400444 is a wasteful number, since it uses less digits than its factorization.

542421400444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133138 (or 133136 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 34.

Adding to 542421400444 its reverse (444004124245), we get a palindrome (986425524689).

The spelling of 542421400444 in words is "five hundred forty-two billion, four hundred twenty-one million, four hundred thousand, four hundred forty-four".