1043958121 has 4 divisors (see below), whose sum is σ = 1047521412. Its totient is φ = 1040394832.

The previous prime is 1043958107. The next prime is 1043958127. The reversal of 1043958121 is 1218593401.

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

It can be written as a sum of positive squares in 2 ways, for example, as 562638400 + 481319721 = 23720^2 + 21939^2 .

It is a cyclic number.

It is not a de Polignac number, because 1043958121 - 2⁹ = 1043957609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1043958127) 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, 1781206 + ... + 1781791.

It is an arithmetic number, because the mean of its divisors is an integer number (261880353).

Almost surely, 2^1043958121 is an apocalyptic number.

It is an amenable number.

1043958121 is a deficient number, since it is larger than the sum of its proper divisors (3563291).

1043958121 is an equidigital number, since it uses as much as digits as its factorization.

1043958121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3563290.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1043958121 is about 32310.3407750522. The cubic root of 1043958121 is about 1014.4430995825.

The spelling of 1043958121 in words is "one billion, forty-three million, nine hundred fifty-eight thousand, one hundred twenty-one".