1440544542 has 16 divisors (see below), whose sum is σ = 2884533120. Its totient is φ = 479607512.

The previous prime is 1440544499. The next prime is 1440544559. The reversal of 1440544542 is 2454450441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138048 + ... + 148115.

It is an arithmetic number, because the mean of its divisors is an integer number (180283320).

Almost surely, 2^1440544542 is an apocalyptic number.

1440544542 is an abundant number, since it is smaller than the sum of its proper divisors (1443988578).

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

1440544542 is a wasteful number, since it uses less digits than its factorization.

1440544542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287007.

The product of its (nonzero) digits is 51200, while the sum is 33.

The square root of 1440544542 is about 37954.5062146776. The cubic root of 1440544542 is about 1129.3855593966.

Adding to 1440544542 its reverse (2454450441), we get a palindrome (3894994983).

The spelling of 1440544542 in words is "one billion, four hundred forty million, five hundred forty-four thousand, five hundred forty-two".