1242624040840 has 256 divisors, whose sum is σ = 3470447877120. Its totient is φ = 389929697280.

The previous prime is 1242624040837. The next prime is 1242624040843. The reversal of 1242624040840 is 480404262421.

It is an interprime number because it is at equal distance from previous prime (1242624040837) and next prime (1242624040843).

It is a super-2 number, since 2×1242624040840² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1242624040840.

It is not an unprimeable number, because it can be changed into a prime (1242624040843) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 263209680 + ... + 263214400.

It is an arithmetic number, because the mean of its divisors is an integer number (13556437020).

Almost surely, 2^{1242624040840} is an apocalyptic number.

1242624040840 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 1242624040840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1735223938560).

1242624040840 is an abundant number, since it is smaller than the sum of its proper divisors (2227823836280).

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

1242624040840 is a wasteful number, since it uses less digits than its factorization.

1242624040840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5352 (or 5348 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 37.

The spelling of 1242624040840 in words is "one trillion, two hundred forty-two billion, six hundred twenty-four million, forty thousand, eight hundred forty".