1440420250 has 32 divisors (see below), whose sum is σ = 2714634000. Its totient is φ = 572286400.

The previous prime is 1440420211. The next prime is 1440420271. The reversal of 1440420250 is 520240441.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 80802121 + 1359618129 = 8989^2 + 36873^2 .

It is a super-2 number, since 2×1440420250² = 4149620993220125000, which contains 22 as substring.

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, 17916 + ... + 56584.

Almost surely, 2^1440420250 is an apocalyptic number.

1440420250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1440420250 is a deficient number, since it is larger than the sum of its proper divisors (1274213750).

1440420250 is a wasteful number, since it uses less digits than its factorization.

1440420250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38835 (or 38825 counting only the distinct ones).

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

The square root of 1440420250 is about 37952.8687980237. The cubic root of 1440420250 is about 1129.3530768589.

Adding to 1440420250 its reverse (520240441), we get a palindrome (1960660691).

It can be divided in two parts, 1440 and 420250, that multiplied together give a square (605160000 = 24600²).

The spelling of 1440420250 in words is "one billion, four hundred forty million, four hundred twenty thousand, two hundred fifty".