1045423421 has 8 divisors (see below), whose sum is σ = 1199180544. Its totient is φ = 892769040.

The previous prime is 1045423403. The next prime is 1045423433. The reversal of 1045423421 is 1243245401.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1045423421 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 (1045423471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273650 + ... + 277443.

It is an arithmetic number, because the mean of its divisors is an integer number (149897568).

Almost surely, 2^1045423421 is an apocalyptic number.

It is an amenable number.

1045423421 is a deficient number, since it is larger than the sum of its proper divisors (153757123).

1045423421 is an equidigital number, since it uses as much as digits as its factorization.

1045423421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551371.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1045423421 is about 32333.0082268879. The cubic root of 1045423421 is about 1014.9175019297.

Adding to 1045423421 its reverse (1243245401), we get a palindrome (2288668822).

The spelling of 1045423421 in words is "one billion, forty-five million, four hundred twenty-three thousand, four hundred twenty-one".