401123042 has 4 divisors (see below), whose sum is σ = 601684566. Its totient is φ = 200561520.

The previous prime is 401123039. The next prime is 401123071. The reversal of 401123042 is 240321104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 374383801 + 26739241 = 19349^2 + 5171^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 401123042.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100280759 + ... + 100280762.

Almost surely, 2^401123042 is an apocalyptic number.

401123042 is a deficient number, since it is larger than the sum of its proper divisors (200561524).

401123042 is a wasteful number, since it uses less digits than its factorization.

401123042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200561523.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 401123042 is about 20028.0563710012. The cubic root of 401123042 is about 737.4952090850.

Adding to 401123042 its reverse (240321104), we get a palindrome (641444146).

The spelling of 401123042 in words is "four hundred one million, one hundred twenty-three thousand, forty-two".