421042101 has 8 divisors (see below), whose sum is σ = 561505344. Its totient is φ = 280636800.

The previous prime is 421042087. The next prime is 421042103. The reversal of 421042101 is 101240124.

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

It is a de Polignac number, because none of the positive numbers 2^k-421042101 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421042103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7045 + ... + 29861.

It is an arithmetic number, because the mean of its divisors is an integer number (70188168).

Almost surely, 2^421042101 is an apocalyptic number.

It is an amenable number.

421042101 is a deficient number, since it is larger than the sum of its proper divisors (140463243).

421042101 is a wasteful number, since it uses less digits than its factorization.

421042101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28971.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 421042101 is about 20519.3104416303. The cubic root of 421042101 is about 749.5061050507.

Adding to 421042101 its reverse (101240124), we get a palindrome (522282225).

The spelling of 421042101 in words is "four hundred twenty-one million, forty-two thousand, one hundred one".