420101878 has 8 divisors (see below), whose sum is σ = 720174672. Its totient is φ = 180043656.

The previous prime is 420101821. The next prime is 420101881. The reversal of 420101878 is 878101024.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15003625 + ... + 15003652.

It is an arithmetic number, because the mean of its divisors is an integer number (90021834).

Almost surely, 2^420101878 is an apocalyptic number.

420101878 is a deficient number, since it is larger than the sum of its proper divisors (300072794).

420101878 is a wasteful number, since it uses less digits than its factorization.

420101878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30007286.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 420101878 is about 20496.3869498992. The cubic root of 420101878 is about 748.9477855203.

The spelling of 420101878 in words is "four hundred twenty million, one hundred one thousand, eight hundred seventy-eight".