2421021340 has 48 divisors (see below), whose sum is σ = 5474498400. Its totient is φ = 895987712.

The previous prime is 2421021319. The next prime is 2421021347. The reversal of 2421021340 is 431201242.

It is a super-2 number, since 2×2421021340² = 11722688657470791200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421021347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40285 + ... + 80404.

It is an arithmetic number, because the mean of its divisors is an integer number (114052050).

Almost surely, 2^2421021340 is an apocalyptic number.

2421021340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2421021340 is an abundant number, since it is smaller than the sum of its proper divisors (3053477060).

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

2421021340 is a wasteful number, since it uses less digits than its factorization.

2421021340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120774 (or 120772 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2421021340 is about 49203.8752538863. The cubic root of 2421021340 is about 1342.7635363517.

Adding to 2421021340 its reverse (431201242), we get a palindrome (2852222582).

The spelling of 2421021340 in words is "two billion, four hundred twenty-one million, twenty-one thousand, three hundred forty".