1254038440 has 16 divisors (see below), whose sum is σ = 2821586580. Its totient is φ = 501615360.

The previous prime is 1254038431. The next prime is 1254038449. The reversal of 1254038440 is 448304521.

It is an interprime number because it is at equal distance from previous prime (1254038431) and next prime (1254038449).

It can be written as a sum of positive squares in 2 ways, for example, as 1160219844 + 93818596 = 34062^2 + 9686^2 .

It is a super-2 number, since 2×1254038440² = 3145224817995267200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1254038449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15675441 + ... + 15675520.

Almost surely, 2^1254038440 is an apocalyptic number.

1254038440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1254038440 is an abundant number, since it is smaller than the sum of its proper divisors (1567548140).

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

1254038440 is a wasteful number, since it uses less digits than its factorization.

1254038440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31350972 (or 31350968 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 1254038440 is about 35412.4051710696. The cubic root of 1254038440 is about 1078.3761719802.

The spelling of 1254038440 in words is "one billion, two hundred fifty-four million, thirty-eight thousand, four hundred forty".