1242650020 has 24 divisors (see below), whose sum is σ = 2763069624. Its totient is φ = 467821056.

The previous prime is 1242650009. The next prime is 1242650051. The reversal of 1242650020 is 200562421.

1242650020 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 591073344 + 651576676 = 24312^2 + 25526^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1242649973 and 1242650000.

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, 1827087 + ... + 1827766.

It is an arithmetic number, because the mean of its divisors is an integer number (115127901).

Almost surely, 2^1242650020 is an apocalyptic number.

1242650020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242650020 is an abundant number, since it is smaller than the sum of its proper divisors (1520419604).

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

1242650020 is a wasteful number, since it uses less digits than its factorization.

1242650020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3654879 (or 3654877 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1242650020 is about 35251.2413965806. The cubic root of 1242650020 is about 1075.1018529779.

The spelling of 1242650020 in words is "one billion, two hundred forty-two million, six hundred fifty thousand, twenty".