1254120398 has 4 divisors (see below), whose sum is σ = 1881180600. Its totient is φ = 627060198.

The previous prime is 1254120391. The next prime is 1254120437. The reversal of 1254120398 is 8930214521.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254120391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313530098 + ... + 313530101.

It is an arithmetic number, because the mean of its divisors is an integer number (470295150).

Almost surely, 2^1254120398 is an apocalyptic number.

1254120398 is a deficient number, since it is larger than the sum of its proper divisors (627060202).

1254120398 is an equidigital number, since it uses as much as digits as its factorization.

1254120398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627060201.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1254120398 is about 35413.5623455195. The cubic root of 1254120398 is about 1078.3996639845.

The spelling of 1254120398 in words is "one billion, two hundred fifty-four million, one hundred twenty thousand, three hundred ninety-eight".