421042233 has 4 divisors (see below), whose sum is σ = 561389648. Its totient is φ = 280694820.

The previous prime is 421042207. The next prime is 421042249. The reversal of 421042233 is 332240124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 421042233 - 2⁵ = 421042201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421042273) 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, 70173703 + ... + 70173708.

It is an arithmetic number, because the mean of its divisors is an integer number (140347412).

Almost surely, 2^421042233 is an apocalyptic number.

It is an amenable number.

421042233 is a deficient number, since it is larger than the sum of its proper divisors (140347415).

421042233 is a wasteful number, since it uses less digits than its factorization.

421042233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140347414.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 421042233 is about 20519.3136581124. The cubic root of 421042233 is about 749.5061833760.

Adding to 421042233 its reverse (332240124), we get a palindrome (753282357).

The spelling of 421042233 in words is "four hundred twenty-one million, forty-two thousand, two hundred thirty-three".