1245234020 has 24 divisors (see below), whose sum is σ = 2768815224. Its totient is φ = 468793856.

The previous prime is 1245234019. The next prime is 1245234043. The reversal of 1245234020 is 204325421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 125260864 + 1119973156 = 11192^2 + 33466^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1830887 + ... + 1831566.

It is an arithmetic number, because the mean of its divisors is an integer number (115367301).

Almost surely, 2^1245234020 is an apocalyptic number.

1245234020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1245234020 is an abundant number, since it is smaller than the sum of its proper divisors (1523581204).

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

1245234020 is a wasteful number, since it uses less digits than its factorization.

1245234020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3662479 (or 3662477 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1245234020 is about 35287.8735545229. The cubic root of 1245234020 is about 1075.8465356511.

Adding to 1245234020 its reverse (204325421), we get a palindrome (1449559441).

The spelling of 1245234020 in words is "one billion, two hundred forty-five million, two hundred thirty-four thousand, twenty".