1254403290840 has 384 divisors, whose sum is σ = 4505010048000. Its totient is φ = 278470133760.

The previous prime is 1254403290809. The next prime is 1254403290869. The reversal of 1254403290840 is 480923044521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1254403290792 and 1254403290801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 36185836 + ... + 36220484.

It is an arithmetic number, because the mean of its divisors is an integer number (11731797000).

Almost surely, 2^{1254403290840} is an apocalyptic number.

1254403290840 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 1254403290840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2252505024000).

1254403290840 is an abundant number, since it is smaller than the sum of its proper divisors (3250606757160).

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

1254403290840 is a wasteful number, since it uses less digits than its factorization.

1254403290840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34855 (or 34844 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 1254403290840 in words is "one trillion, two hundred fifty-four billion, four hundred three million, two hundred ninety thousand, eight hundred forty".