421112142 has 32 divisors (see below), whose sum is σ = 1020879360. Its totient is φ = 127609560.

The previous prime is 421112141. The next prime is 421112149. The reversal of 421112142 is 241211124.

It is a super-2 number, since 2×421112142² = 354670872279656328, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421112141) 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, 353878 + ... + 355065.

It is an arithmetic number, because the mean of its divisors is an integer number (31902480).

Almost surely, 2^421112142 is an apocalyptic number.

421112142 is an abundant number, since it is smaller than the sum of its proper divisors (599767218).

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

421112142 is a wasteful number, since it uses less digits than its factorization.

421112142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708965 (or 708959 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 421112142 is about 20521.0170800572. The cubic root of 421112142 is about 749.5476632435.

Adding to 421112142 its reverse (241211124), we get a palindrome (662323266).

It can be divided in two parts, 42111 and 2142, that added together give a triangular number (44253 = T₂₉₇).

The spelling of 421112142 in words is "four hundred twenty-one million, one hundred twelve thousand, one hundred forty-two".