1254121745 has 8 divisors (see below), whose sum is σ = 1527408384. Its totient is φ = 988322544.

The previous prime is 1254121723. The next prime is 1254121769. The reversal of 1254121745 is 5471214521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1254121745 - 2¹² = 1254117649 is a prime.

It is a Duffinian number.

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, 1871489 + ... + 1872158.

It is an arithmetic number, because the mean of its divisors is an integer number (190926048).

Almost surely, 2^1254121745 is an apocalyptic number.

It is an amenable number.

1254121745 is a deficient number, since it is larger than the sum of its proper divisors (273286639).

1254121745 is an equidigital number, since it uses as much as digits as its factorization.

1254121745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3743719.

The product of its digits is 11200, while the sum is 32.

The square root of 1254121745 is about 35413.5813636520. The cubic root of 1254121745 is about 1078.4000500728.

The spelling of 1254121745 in words is "one billion, two hundred fifty-four million, one hundred twenty-one thousand, seven hundred forty-five".