1254043397 has 2 divisors, whose sum is σ = 1254043398. Its totient is φ = 1254043396.

The previous prime is 1254043381. The next prime is 1254043463. The reversal of 1254043397 is 7933404521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 797836516 + 456206881 = 28246^2 + 21359^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254043397 - 2⁴ = 1254043381 is a prime.

It is a super-3 number, since 3×1254043397³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1254043397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1254043367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627021698 + 627021699.

It is an arithmetic number, because the mean of its divisors is an integer number (627021699).

Almost surely, 2^1254043397 is an apocalyptic number.

It is an amenable number.

1254043397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254043397 is an equidigital number, since it uses as much as digits as its factorization.

1254043397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 1254043397 is about 35412.4751605984. The cubic root of 1254043397 is about 1078.3775928574.

The spelling of 1254043397 in words is "one billion, two hundred fifty-four million, forty-three thousand, three hundred ninety-seven".