421987094 has 4 divisors (see below), whose sum is σ = 632980644. Its totient is φ = 210993546.

The previous prime is 421987037. The next prime is 421987117. The reversal of 421987094 is 490789124.

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

It is a Curzon number.

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, 105496772 + ... + 105496775.

It is an arithmetic number, because the mean of its divisors is an integer number (158245161).

Almost surely, 2^421987094 is an apocalyptic number.

421987094 is a deficient number, since it is larger than the sum of its proper divisors (210993550).

421987094 is a wasteful number, since it uses less digits than its factorization.

421987094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210993549.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 421987094 is about 20542.3244546473. The cubic root of 421987094 is about 750.0664201917.

The spelling of 421987094 in words is "four hundred twenty-one million, nine hundred eighty-seven thousand, ninety-four".