1254138321 has 32 divisors (see below), whose sum is σ = 1764846720. Its totient is φ = 791078400.

The previous prime is 1254138313. The next prime is 1254138329. The reversal of 1254138321 is 1238314521.

It is an interprime number because it is at equal distance from previous prime (1254138313) and next prime (1254138329).

It is not a de Polignac number, because 1254138321 - 2³ = 1254138313 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1254138329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1148986 + ... + 1150076.

It is an arithmetic number, because the mean of its divisors is an integer number (55151460).

Almost surely, 2^1254138321 is an apocalyptic number.

It is an amenable number.

1254138321 is a deficient number, since it is larger than the sum of its proper divisors (510708399).

1254138321 is a wasteful number, since it uses less digits than its factorization.

1254138321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377.

The product of its digits is 5760, while the sum is 30.

The square root of 1254138321 is about 35413.8153973841. The cubic root of 1254138321 is about 1078.4048012012.

The spelling of 1254138321 in words is "one billion, two hundred fifty-four million, one hundred thirty-eight thousand, three hundred twenty-one".