1240331415420 has 192 divisors, whose sum is σ = 3600898560000. Its totient is φ = 318665318400.

The previous prime is 1240331415413. The next prime is 1240331415437. The reversal of 1240331415420 is 245141330421.

It is a super-2 number, since 2×1240331415420² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 768958534 + ... + 768960146.

It is an arithmetic number, because the mean of its divisors is an integer number (18754680000).

Almost surely, 2^{1240331415420} is an apocalyptic number.

1240331415420 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 1240331415420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1800449280000).

1240331415420 is an abundant number, since it is smaller than the sum of its proper divisors (2360567144580).

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

1240331415420 is a wasteful number, since it uses less digits than its factorization.

1240331415420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3236 (or 3234 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 1240331415420 its reverse (245141330421), we get a palindrome (1485472745841).

The spelling of 1240331415420 in words is "one trillion, two hundred forty billion, three hundred thirty-one million, four hundred fifteen thousand, four hundred twenty".