1242053125440 has 112 divisors (see below), whose sum is σ = 3944917354752. Its totient is φ = 331096692736.

The previous prime is 1242053125399. The next prime is 1242053125463. The reversal of 1242053125440 is 445213502421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2495497 + ... + 2951543.

Almost surely, 2^{1242053125440} is an apocalyptic number.

1242053125440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242053125440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1972458677376).

1242053125440 is an abundant number, since it is smaller than the sum of its proper divisors (2702864229312).

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

1242053125440 is a wasteful number, since it uses less digits than its factorization.

1242053125440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458904 (or 458894 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 1242053125440 its reverse (445213502421), we get a palindrome (1687266627861).

The spelling of 1242053125440 in words is "one trillion, two hundred forty-two billion, fifty-three million, one hundred twenty-five thousand, four hundred forty".