423506642 has 16 divisors (see below), whose sum is σ = 690524352. Its totient is φ = 193636560.

The previous prime is 423506639. The next prime is 423506647. The reversal of 423506642 is 246605324.

It is a junction number, because it is equal to n+sod(n) for n = 423506599 and 423506608.

It is not an unprimeable number, because it can be changed into a prime (423506647) 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, 73334 + ... + 78897.

It is an arithmetic number, because the mean of its divisors is an integer number (43157772).

Almost surely, 2^423506642 is an apocalyptic number.

423506642 is a deficient number, since it is larger than the sum of its proper divisors (267017710).

423506642 is a wasteful number, since it uses less digits than its factorization.

423506642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152353.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 423506642 is about 20579.2770038211. The cubic root of 423506642 is about 750.9656551096.

The spelling of 423506642 in words is "four hundred twenty-three million, five hundred six thousand, six hundred forty-two".