1421042502400 has 216 divisors, whose sum is σ = 3642637950000. Its totient is φ = 548205772800.

The previous prime is 1421042502263. The next prime is 1421042502491. The reversal of 1421042502400 is 42052401241.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189493851 + ... + 189501349.

Almost surely, 2^{1421042502400} is an apocalyptic number.

1421042502400 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 1421042502400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1821318975000).

1421042502400 is an abundant number, since it is smaller than the sum of its proper divisors (2221595447600).

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

1421042502400 is a wasteful number, since it uses less digits than its factorization.

1421042502400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8575 (or 8556 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 1421042502400 its reverse (42052401241), we get a palindrome (1463094903641).

The spelling of 1421042502400 in words is "one trillion, four hundred twenty-one billion, forty-two million, five hundred two thousand, four hundred".