1253354540 has 24 divisors (see below), whose sum is σ = 2693256720. Its totient is φ = 489682368.

The previous prime is 1253354537. The next prime is 1253354579. The reversal of 1253354540 is 454533521.

It is a happy number.

It is a super-2 number, since 2×1253354540² = 3141795205877223200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1253354497 and 1253354506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 727835 + ... + 729554.

It is an arithmetic number, because the mean of its divisors is an integer number (112219030).

Almost surely, 2^1253354540 is an apocalyptic number.

1253354540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253354540 is an abundant number, since it is smaller than the sum of its proper divisors (1439902180).

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

1253354540 is a wasteful number, since it uses less digits than its factorization.

1253354540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457441 (or 1457439 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 1253354540 is about 35402.7476334818. The cubic root of 1253354540 is about 1078.1801026125.

The spelling of 1253354540 in words is "one billion, two hundred fifty-three million, three hundred fifty-four thousand, five hundred forty".