1045121423 has 4 divisors (see below), whose sum is σ = 1046866800. Its totient is φ = 1043376048.

The previous prime is 1045121419. The next prime is 1045121431. The reversal of 1045121423 is 3241215401.

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 1045121423 - 2² = 1045121419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045141423) 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 in 3 ways as a sum of consecutive naturals, for example, 871790 + ... + 872987.

It is an arithmetic number, because the mean of its divisors is an integer number (261716700).

Almost surely, 2^1045121423 is an apocalyptic number.

1045121423 is a deficient number, since it is larger than the sum of its proper divisors (1745377).

1045121423 is an equidigital number, since it uses as much as digits as its factorization.

1045121423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745376.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1045121423 is about 32328.3377704453. The cubic root of 1045121423 is about 1014.8197639962.

Adding to 1045121423 its reverse (3241215401), we get a palindrome (4286336824).

The spelling of 1045121423 in words is "one billion, forty-five million, one hundred twenty-one thousand, four hundred twenty-three".