421594142 has 4 divisors (see below), whose sum is σ = 632391216. Its totient is φ = 210797070.

The previous prime is 421594123. The next prime is 421594177. The reversal of 421594142 is 241495124.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×421594142³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421594099 and 421594108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105398534 + ... + 105398537.

It is an arithmetic number, because the mean of its divisors is an integer number (158097804).

Almost surely, 2^421594142 is an apocalyptic number.

421594142 is a deficient number, since it is larger than the sum of its proper divisors (210797074).

421594142 is a wasteful number, since it uses less digits than its factorization.

421594142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210797073.

The product of its digits is 11520, while the sum is 32.

The square root of 421594142 is about 20532.7577787301. The cubic root of 421594142 is about 749.8335286821.

The spelling of 421594142 in words is "four hundred twenty-one million, five hundred ninety-four thousand, one hundred forty-two".