45143421 has 8 divisors (see below), whose sum is σ = 61591200. Its totient is φ = 29395632.

The previous prime is 45143393. The next prime is 45143431. The reversal of 45143421 is 12434154.

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

It is not a de Polignac number, because 45143421 - 2¹¹ = 45141373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45143391 and 45143400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45143431) 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, 174846 + ... + 175103.

It is an arithmetic number, because the mean of its divisors is an integer number (7698900).

Almost surely, 2^45143421 is an apocalyptic number.

It is an amenable number.

45143421 is a deficient number, since it is larger than the sum of its proper divisors (16447779).

45143421 is a wasteful number, since it uses less digits than its factorization.

45143421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349995.

The product of its digits is 1920, while the sum is 24.

The square root of 45143421 is about 6718.8853986357. The cubic root of 45143421 is about 356.0668061512.

Adding to 45143421 its reverse (12434154), we get a palindrome (57577575).

The spelling of 45143421 in words is "forty-five million, one hundred forty-three thousand, four hundred twenty-one".