421042378 has 8 divisors (see below), whose sum is σ = 631687968. Its totient is φ = 210479724.

The previous prime is 421042343. The next prime is 421042379. The reversal of 421042378 is 873240124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (421042379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5926 + ... + 29617.

It is an arithmetic number, because the mean of its divisors is an integer number (78960996).

Almost surely, 2^421042378 is an apocalyptic number.

421042378 is a deficient number, since it is larger than the sum of its proper divisors (210645590).

421042378 is a wasteful number, since it uses less digits than its factorization.

421042378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41468.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 421042378 is about 20519.3171913687. The cubic root of 421042378 is about 749.5062694152.

The spelling of 421042378 in words is "four hundred twenty-one million, forty-two thousand, three hundred seventy-eight".