1254224440 has 64 divisors (see below), whose sum is σ = 3303840960. Its totient is φ = 419527680.

The previous prime is 1254224429. The next prime is 1254224449. The reversal of 1254224440 is 444224521.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 1254224399 and 1254224408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254224449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43147 + ... + 66106.

It is an arithmetic number, because the mean of its divisors is an integer number (51622515).

Almost surely, 2^1254224440 is an apocalyptic number.

1254224440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1254224440 is an abundant number, since it is smaller than the sum of its proper divisors (2049616520).

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

1254224440 is a wasteful number, since it uses less digits than its factorization.

1254224440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109312 (or 109308 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 28.

The square root of 1254224440 is about 35415.0312720461. The cubic root of 1254224440 is about 1078.4294845544.

Adding to 1254224440 its reverse (444224521), we get a palindrome (1698448961).

The spelling of 1254224440 in words is "one billion, two hundred fifty-four million, two hundred twenty-four thousand, four hundred forty".