421429722 has 16 divisors (see below), whose sum is σ = 963268032. Its totient is φ = 120408480.

The previous prime is 421429703. The next prime is 421429727. The reversal of 421429722 is 227924124.

It is not an unprimeable number, because it can be changed into a prime (421429727) 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, 5016979 + ... + 5017062.

It is an arithmetic number, because the mean of its divisors is an integer number (60204252).

Almost surely, 2^421429722 is an apocalyptic number.

421429722 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

421429722 is an abundant number, since it is smaller than the sum of its proper divisors (541838310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421429722 is a wasteful number, since it uses less digits than its factorization.

421429722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10034053.

The product of its digits is 16128, while the sum is 33.

The square root of 421429722 is about 20528.7535422879. The cubic root of 421429722 is about 749.7360386657.

The spelling of 421429722 in words is "four hundred twenty-one million, four hundred twenty-nine thousand, seven hundred twenty-two".