1248021450 has 72 divisors (see below), whose sum is σ = 3610958988. Its totient is φ = 307203840.

The previous prime is 1248021443. The next prime is 1248021451. The reversal of 1248021450 is 541208421.

It can be written as a sum of positive squares in 6 ways, for example, as 66243321 + 1181778129 = 8139^2 + 34377^2 .

It is not an unprimeable number, because it can be changed into a prime (1248021451) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 100819 + ... + 112518.

Almost surely, 2^1248021450 is an apocalyptic number.

1248021450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1248021450 is an abundant number, since it is smaller than the sum of its proper divisors (2362937538).

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

1248021450 is a wasteful number, since it uses less digits than its factorization.

1248021450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213368 (or 213360 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 1248021450 is about 35327.3470557867. The cubic root of 1248021450 is about 1076.6486906466.

Adding to 1248021450 its reverse (541208421), we get a palindrome (1789229871).

It can be divided in two parts, 12480 and 21450, that added together give a triangular number (33930 = T₂₆₀).

The spelling of 1248021450 in words is "one billion, two hundred forty-eight million, twenty-one thousand, four hundred fifty".