423742 has 24 divisors (see below), whose sum is σ = 746928. Its totient is φ = 179520.

The previous prime is 423727. The next prime is 423749. The reversal of 423742 is 247324.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4063 + ... + 4165.

It is an arithmetic number, because the mean of its divisors is an integer number (31122).

2⁴²³⁷⁴² is an apocalyptic number.

423742 is the 412-nd heptagonal number.

423742 is a deficient number, since it is larger than the sum of its proper divisors (323186).

423742 is a wasteful number, since it uses less digits than its factorization.

423742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 133 counting only the distinct ones).

The product of its digits is 1344, while the sum is 22.

The square root of 423742 is about 650.9546835226. The cubic root of 423742 is about 75.1104742297.

It can be divided in two parts, 42374 and 2, that multiplied together give a palindrome (84748).

The spelling of 423742 in words is "four hundred twenty-three thousand, seven hundred forty-two", and thus it is an iban number.