1421167425840 has 240 divisors, whose sum is σ = 4991532878592. Its totient is φ = 361680523776.

The previous prime is 1421167425829. The next prime is 1421167425877. The reversal of 1421167425840 is 485247611241.

1421167425840 is a `hidden beast` number, since 1 + 4 + 2 + 1 + 1 + 67 + 4 + 2 + 584 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 7239219 + ... + 7432941.

Almost surely, 2^{1421167425840} is an apocalyptic number.

1421167425840 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 1421167425840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2495766439296).

1421167425840 is an abundant number, since it is smaller than the sum of its proper divisors (3570365452752).

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

1421167425840 is a wasteful number, since it uses less digits than its factorization.

1421167425840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194208 (or 194199 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 1421167425840 in words is "one trillion, four hundred twenty-one billion, one hundred sixty-seven million, four hundred twenty-five thousand, eight hundred forty".