1542245444 has 12 divisors (see below), whose sum is σ = 2704113468. Its totient is φ = 769641600.

The previous prime is 1542245431. The next prime is 1542245513. The reversal of 1542245444 is 4445422451.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1151787844 + 390457600 = 33938^2 + 19760^2 .

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, 367937 + ... + 372104.

It is an arithmetic number, because the mean of its divisors is an integer number (225342789).

Almost surely, 2^1542245444 is an apocalyptic number.

It is an amenable number.

1542245444 is a deficient number, since it is larger than the sum of its proper divisors (1161868024).

1542245444 is a wasteful number, since it uses less digits than its factorization.

1542245444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740566 (or 740564 counting only the distinct ones).

The product of its digits is 102400, while the sum is 35.

The square root of 1542245444 is about 39271.4329252193. The cubic root of 1542245444 is about 1155.3613416878.

Adding to 1542245444 its reverse (4445422451), we get a palindrome (5987667895).

The spelling of 1542245444 in words is "one billion, five hundred forty-two million, two hundred forty-five thousand, four hundred forty-four".