421000742 has 8 divisors (see below), whose sum is σ = 632235456. Its totient is φ = 210255592.

The previous prime is 421000721. The next prime is 421000753. The reversal of 421000742 is 247000124.

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, 120233 + ... + 123684.

It is an arithmetic number, because the mean of its divisors is an integer number (79029432).

Almost surely, 2^421000742 is an apocalyptic number.

421000742 is a deficient number, since it is larger than the sum of its proper divisors (211234714).

421000742 is a wasteful number, since it uses less digits than its factorization.

421000742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244782.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 421000742 is about 20518.3026101089. The cubic root of 421000742 is about 749.4815628984.

Adding to 421000742 its reverse (247000124), we get a palindrome (668000866).

The spelling of 421000742 in words is "four hundred twenty-one million, seven hundred forty-two", and thus it is an aban number.