1242425020 has 12 divisors (see below), whose sum is σ = 2609092584. Its totient is φ = 496970000.

The previous prime is 1242425011. The next prime is 1242425069. The reversal of 1242425020 is 205242421.

It is a junction number, because it is equal to n+sod(n) for n = 1242424982 and 1242425000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31060606 + ... + 31060645.

It is an arithmetic number, because the mean of its divisors is an integer number (217424382).

Almost surely, 2^1242425020 is an apocalyptic number.

1242425020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242425020 is an abundant number, since it is smaller than the sum of its proper divisors (1366667564).

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

1242425020 is a wasteful number, since it uses less digits than its factorization.

1242425020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62121260 (or 62121258 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 1242425020 is about 35248.0498751349. The cubic root of 1242425020 is about 1075.0369614117.

Adding to 1242425020 its reverse (205242421), we get a palindrome (1447667441).

The spelling of 1242425020 in words is "one billion, two hundred forty-two million, four hundred twenty-five thousand, twenty".