1242953586420 has 192 divisors, whose sum is σ = 4302283216896. Its totient is φ = 261094003200.

The previous prime is 1242953586373. The next prime is 1242953586443. The reversal of 1242953586420 is 246853592421.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 737995 + ... + 1740845.

It is an arithmetic number, because the mean of its divisors is an integer number (22407725088).

Almost surely, 2^{1242953586420} is an apocalyptic number.

1242953586420 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 1242953586420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2151141608448).

1242953586420 is an abundant number, since it is smaller than the sum of its proper divisors (3059329630476).

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

1242953586420 is a wasteful number, since it uses less digits than its factorization.

1242953586420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003110 (or 1003108 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 51.

The spelling of 1242953586420 in words is "one trillion, two hundred forty-two billion, nine hundred fifty-three million, five hundred eighty-six thousand, four hundred twenty".