1253841040 has 40 divisors (see below), whose sum is σ = 2921563008. Its totient is φ = 500438400.

The previous prime is 1253841007. The next prime is 1253841041. The reversal of 1253841040 is 401483521.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1253841041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20115 + ... + 53965.

Almost surely, 2^1253841040 is an apocalyptic number.

1253841040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253841040 is an abundant number, since it is smaller than the sum of its proper divisors (1667721968).

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

1253841040 is a wasteful number, since it uses less digits than its factorization.

1253841040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34327 (or 34321 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1253841040 is about 35409.6179024852. The cubic root of 1253841040 is about 1078.3195860947.

The spelling of 1253841040 in words is "one billion, two hundred fifty-three million, eight hundred forty-one thousand, forty".