1242250420 has 48 divisors (see below), whose sum is σ = 2674280448. Its totient is φ = 484494080.

The previous prime is 1242250403. The next prime is 1242250433. The reversal of 1242250420 is 240522421.

It is a super-2 number, since 2×1242250420² = 3086372211980352800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1242250391 and 1242250400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261789 + ... + 266491.

It is an arithmetic number, because the mean of its divisors is an integer number (55714176).

Almost surely, 2^1242250420 is an apocalyptic number.

1242250420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242250420 is an abundant number, since it is smaller than the sum of its proper divisors (1432030028).

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

1242250420 is a wasteful number, since it uses less digits than its factorization.

1242250420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5040 (or 5038 counting only the distinct ones).

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

The square root of 1242250420 is about 35245.5730553498. The cubic root of 1242250420 is about 1074.9866001575.

Adding to 1242250420 its reverse (240522421), we get a palindrome (1482772841).

The spelling of 1242250420 in words is "one billion, two hundred forty-two million, two hundred fifty thousand, four hundred twenty".