1240102020 has 24 divisors (see below), whose sum is σ = 3472285824. Its totient is φ = 330693856.

The previous prime is 1240101997. The next prime is 1240102033. The reversal of 1240102020 is 202010421.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1240101987 and 1240102005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10334124 + ... + 10334243.

It is an arithmetic number, because the mean of its divisors is an integer number (144678576).

Almost surely, 2^1240102020 is an apocalyptic number.

1240102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240102020 is an abundant number, since it is smaller than the sum of its proper divisors (2232183804).

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

1240102020 is a wasteful number, since it uses less digits than its factorization.

1240102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20668379 (or 20668377 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1240102020 is about 35215.0822801822. The cubic root of 1240102020 is about 1074.3665335863.

Adding to 1240102020 its reverse (202010421), we get a palindrome (1442112441).

The spelling of 1240102020 in words is "one billion, two hundred forty million, one hundred two thousand, twenty".