421254310045 has 4 divisors (see below), whose sum is σ = 505505172060. Its totient is φ = 337003448032.

The previous prime is 421254310031. The next prime is 421254310111. The reversal of 421254310045 is 540013452124.

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 147460608036 + 273793702009 = 384006^2 + 523253^2 .

It is a cyclic number.

It is not a de Polignac number, because 421254310045 - 2¹⁵ = 421254277277 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421254309989 and 421254310016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42125431000 + ... + 42125431009.

It is an arithmetic number, because the mean of its divisors is an integer number (126376293015).

Almost surely, 2^421254310045 is an apocalyptic number.

It is an amenable number.

421254310045 is a deficient number, since it is larger than the sum of its proper divisors (84250862015).

421254310045 is an equidigital number, since it uses as much as digits as its factorization.

421254310045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84250862014.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 421254310045 its reverse (540013452124), we get a palindrome (961267762169).

The spelling of 421254310045 in words is "four hundred twenty-one billion, two hundred fifty-four million, three hundred ten thousand, forty-five".