421107 has 16 divisors (see below), whose sum is σ = 622080. Its totient is φ = 252032.

The previous prime is 421103. The next prime is 421121. The reversal of 421107 is 701124.

It is a cyclic number.

It is not a de Polignac number, because 421107 - 2² = 421103 is a prime.

It is a super-2 number, since 2×421107² = 354662210898, which contains 22 as substring.

It is an Ulam number.

421107 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (421103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 994 + ... + 1352.

It is an arithmetic number, because the mean of its divisors is an integer number (38880).

2⁴²¹¹⁰⁷ is an apocalyptic number.

421107 is a deficient number, since it is larger than the sum of its proper divisors (200973).

421107 is a wasteful number, since it uses less digits than its factorization.

421107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 421107 is about 648.9275768528. The cubic root of 421107 is about 74.9544612441.

It can be divided in two parts, 421 and 107, that added together give a triangular number (528 = T₃₂).

The spelling of 421107 in words is "four hundred twenty-one thousand, one hundred seven", and thus it is an iban number.