401603642 has 8 divisors (see below), whose sum is σ = 657169632. Its totient is φ = 182547100.

The previous prime is 401603641. The next prime is 401603663. The reversal of 401603642 is 246306104.

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

It is a super-2 number, since 2×401603642² = 322570970535328328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401603641) 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, 9127334 + ... + 9127377.

It is an arithmetic number, because the mean of its divisors is an integer number (82146204).

Almost surely, 2^401603642 is an apocalyptic number.

401603642 is a deficient number, since it is larger than the sum of its proper divisors (255565990).

401603642 is a wasteful number, since it uses less digits than its factorization.

401603642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18254724.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 401603642 is about 20040.0509480390. The cubic root of 401603642 is about 737.7896314099.

Adding to 401603642 its reverse (246306104), we get a palindrome (647909746).

The spelling of 401603642 in words is "four hundred one million, six hundred three thousand, six hundred forty-two".