542046440 has 128 divisors (see below), whose sum is σ = 1401321600. Its totient is φ = 187038720.

The previous prime is 542046437. The next prime is 542046443. The reversal of 542046440 is 44640245.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (542046437) and next prime (542046443).

It is not an unprimeable number, because it can be changed into a prime (542046443) 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, 819710 + ... + 820370.

It is an arithmetic number, because the mean of its divisors is an integer number (10947825).

Almost surely, 2^542046440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 542046440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (700660800).

542046440 is an abundant number, since it is smaller than the sum of its proper divisors (859275160).

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

542046440 is a wasteful number, since it uses less digits than its factorization.

542046440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787 (or 783 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 542046440 is about 23281.8908166841. The cubic root of 542046440 is about 815.3526720880.

Adding to 542046440 its reverse (44640245), we get a palindrome (586686685).

The spelling of 542046440 in words is "five hundred forty-two million, forty-six thousand, four hundred forty".