421202124 has 36 divisors (see below), whose sum is σ = 1216806864. Its totient is φ = 120343392.

The previous prime is 421202107. The next prime is 421202129.

421202124 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×421202124² = 354822458524222752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 421202097 and 421202106.

It is not an unprimeable number, because it can be changed into a prime (421202129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 835467 + ... + 835970.

Almost surely, 2^421202124 is an apocalyptic number.

It is an amenable number.

421202124 is an abundant number, since it is smaller than the sum of its proper divisors (795604740).

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

421202124 is a wasteful number, since it uses less digits than its factorization.

421202124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671454 (or 1671449 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 421202124 is about 20523.2093981424. The cubic root of 421202124 is about 749.6010464858.

It can be divided in two parts, 42120 and 2124, that added together give a palindrome (44244).

The spelling of 421202124 in words is "four hundred twenty-one million, two hundred two thousand, one hundred twenty-four".