1254213943 has 4 divisors (see below), whose sum is σ = 1308745008. Its totient is φ = 1199682880.

The previous prime is 1254213881. The next prime is 1254213971. The reversal of 1254213943 is 3493124521.

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

It is a cyclic number.

It is not a de Polignac number, because 1254213943 - 2¹⁷ = 1254082871 is a prime.

It is a super-2 number, since 2×1254213943² = 3146105229631214498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1254213899 and 1254213908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254213973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27265498 + ... + 27265543.

It is an arithmetic number, because the mean of its divisors is an integer number (327186252).

Almost surely, 2^1254213943 is an apocalyptic number.

1254213943 is a deficient number, since it is larger than the sum of its proper divisors (54531065).

1254213943 is an equidigital number, since it uses as much as digits as its factorization.

1254213943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54531064.

The product of its digits is 25920, while the sum is 34.

The square root of 1254213943 is about 35414.8830719515. The cubic root of 1254213943 is about 1078.4264759739.

The spelling of 1254213943 in words is "one billion, two hundred fifty-four million, two hundred thirteen thousand, nine hundred forty-three".