2421021431240 has 16 divisors (see below), whose sum is σ = 5447298220380. Its totient is φ = 968408572480.

The previous prime is 2421021431233. The next prime is 2421021431263. The reversal of 2421021431240 is 421341201242.

It can be written as a sum of positive squares in 2 ways, for example, as 2327144148004 + 93877283236 = 1525498^2 + 306394^2 .

It is a super-2 number, since 2×2421021431240² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30262767851 + ... + 30262767930.

Almost surely, 2^{2421021431240} is an apocalyptic number.

2421021431240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2421021431240 is an abundant number, since it is smaller than the sum of its proper divisors (3026276789140).

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

2421021431240 is a wasteful number, since it uses less digits than its factorization.

2421021431240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60525535792 (or 60525535788 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 2421021431240 its reverse (421341201242), we get a palindrome (2842362632482).

The spelling of 2421021431240 in words is "two trillion, four hundred twenty-one billion, twenty-one million, four hundred thirty-one thousand, two hundred forty".