421042069 has 8 divisors (see below), whose sum is σ = 489079808. Its totient is φ = 354976560.

The previous prime is 421042051. The next prime is 421042081. The reversal of 421042069 is 960240124.

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

It is a cyclic number.

It is not a de Polignac number, because 421042069 - 2¹⁹ = 420517781 is a prime.

It is a super-2 number, since 2×421042069² = 354552847735601522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421042049) 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, 492597 + ... + 493450.

It is an arithmetic number, because the mean of its divisors is an integer number (61134976).

Almost surely, 2^421042069 is an apocalyptic number.

It is an amenable number.

421042069 is a deficient number, since it is larger than the sum of its proper divisors (68037739).

421042069 is an equidigital number, since it uses as much as digits as its factorization.

421042069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986115.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 421042069 is about 20519.3096618770. The cubic root of 421042069 is about 749.5060860627.

The spelling of 421042069 in words is "four hundred twenty-one million, forty-two thousand, sixty-nine".