1242401152536 has 192 divisors, whose sum is σ = 3672993542400. Its totient is φ = 378025761024.

The previous prime is 1242401152507. The next prime is 1242401152561. The reversal of 1242401152536 is 6352511042421.

1242401152536 is a `hidden beast` number, since 1 + 2 + 4 + 2 + 4 + 0 + 115 + 2 + 536 = 666.

It is a super-2 number, since 2×1242401152536² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1242401152536.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5094295 + ... + 5332601.

It is an arithmetic number, because the mean of its divisors is an integer number (19130174700).

Almost surely, 2^{1242401152536} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242401152536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1836496771200).

1242401152536 is an abundant number, since it is smaller than the sum of its proper divisors (2430592389864).

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

1242401152536 is a wasteful number, since it uses less digits than its factorization.

1242401152536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238478 (or 238471 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 1242401152536 its reverse (6352511042421), we get a palindrome (7594912194957).

The spelling of 1242401152536 in words is "one trillion, two hundred forty-two billion, four hundred one million, one hundred fifty-two thousand, five hundred thirty-six".