1240201420 has 24 divisors (see below), whose sum is σ = 2606313024. Its totient is φ = 495720576.

The previous prime is 1240201411. The next prime is 1240201429. The reversal of 1240201420 is 241020421.

It is an interprime number because it is at equal distance from previous prime (1240201411) and next prime (1240201429).

It is a junction number, because it is equal to n+sod(n) for n = 1240201394 and 1240201403.

It is not an unprimeable number, because it can be changed into a prime (1240201429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6672 + ... + 50248.

It is an arithmetic number, because the mean of its divisors is an integer number (108596376).

Almost surely, 2^1240201420 is an apocalyptic number.

1240201420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240201420 is an abundant number, since it is smaller than the sum of its proper divisors (1366111604).

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

1240201420 is a wasteful number, since it uses less digits than its factorization.

1240201420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45009 (or 45007 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1240201420 is about 35216.4935790036. The cubic root of 1240201420 is about 1074.3952379936.

Adding to 1240201420 its reverse (241020421), we get a palindrome (1481221841).

The spelling of 1240201420 in words is "one billion, two hundred forty million, two hundred one thousand, four hundred twenty".