1253241378 has 24 divisors (see below), whose sum is σ = 2720201328. Its totient is φ = 417001752.

The previous prime is 1253241373. The next prime is 1253241389. The reversal of 1253241378 is 8731423521.

1253241378 is a `hidden beast` number, since 12 + 532 + 41 + 3 + 78 = 666.

It is a super-2 number, since 2×1253241378² = 3141227903062677768, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1253241373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51700 + ... + 71967.

It is an arithmetic number, because the mean of its divisors is an integer number (113341722).

Almost surely, 2^1253241378 is an apocalyptic number.

1253241378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1253241378 is an abundant number, since it is smaller than the sum of its proper divisors (1466959950).

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

1253241378 is a wasteful number, since it uses less digits than its factorization.

1253241378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124238 (or 124235 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 1253241378 is about 35401.1493881202. The cubic root of 1253241378 is about 1078.1476529783.

Adding to 1253241378 its reverse (8731423521), we get a palindrome (9984664899).

The spelling of 1253241378 in words is "one billion, two hundred fifty-three million, two hundred forty-one thousand, three hundred seventy-eight".