421422154 has 8 divisors (see below), whose sum is σ = 632823840. Its totient is φ = 210480876.

The previous prime is 421422151. The next prime is 421422167. The reversal of 421422154 is 451224124.

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

It is not an unprimeable number, because it can be changed into a prime (421422151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112804 + ... + 116479.

It is an arithmetic number, because the mean of its divisors is an integer number (79102980).

Almost surely, 2^421422154 is an apocalyptic number.

421422154 is a deficient number, since it is larger than the sum of its proper divisors (211401686).

421422154 is a wasteful number, since it uses less digits than its factorization.

421422154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230204.

The product of its digits is 2560, while the sum is 25.

The square root of 421422154 is about 20528.5692146335. The cubic root of 421422154 is about 749.7315507396.

Adding to 421422154 its reverse (451224124), we get a palindrome (872646278).

The spelling of 421422154 in words is "four hundred twenty-one million, four hundred twenty-two thousand, one hundred fifty-four".