1240551244542 has 16 divisors (see below), whose sum is σ = 2561138053632. Its totient is φ = 400177820760.

The previous prime is 1240551244529. The next prime is 1240551244553. The reversal of 1240551244542 is 2454421550421.

It is a self number, because there is not a number n which added to its sum of digits gives 1240551244542.

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, 3334814988 + ... + 3334815359.

It is an arithmetic number, because the mean of its divisors is an integer number (160071128352).

Almost surely, 2^{1240551244542} is an apocalyptic number.

1240551244542 is an abundant number, since it is smaller than the sum of its proper divisors (1320586809090).

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

1240551244542 is a wasteful number, since it uses less digits than its factorization.

1240551244542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6669630383.

The product of its (nonzero) digits is 256000, while the sum is 39.

Adding to 1240551244542 its reverse (2454421550421), we get a palindrome (3694972794963).

The spelling of 1240551244542 in words is "one trillion, two hundred forty billion, five hundred fifty-one million, two hundred forty-four thousand, five hundred forty-two".