542443140 has 72 divisors (see below), whose sum is σ = 1742209560. Its totient is φ = 136141824.

The previous prime is 542443133. The next prime is 542443147. The reversal of 542443140 is 41344245.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (542443133) and next prime (542443147).

It can be written as a sum of positive squares in 4 ways, for example, as 55711296 + 486731844 = 7464^2 + 22062^2 .

It is not an unprimeable number, because it can be changed into a prime (542443147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85575 + ... + 91694.

It is an arithmetic number, because the mean of its divisors is an integer number (24197355).

Almost surely, 2^542443140 is an apocalyptic number.

It is an amenable number.

542443140 is an abundant number, since it is smaller than the sum of its proper divisors (1199766420).

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

542443140 is a wasteful number, since it uses less digits than its factorization.

542443140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177301 (or 177296 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 542443140 is about 23290.4087555371. The cubic root of 542443140 is about 815.5515305294.

Adding to 542443140 its reverse (41344245), we get a palindrome (583787385).

The spelling of 542443140 in words is "five hundred forty-two million, four hundred forty-three thousand, one hundred forty".