401023242 has 24 divisors (see below), whose sum is σ = 892368516. Its totient is φ = 130061376.

The previous prime is 401023229. The next prime is 401023307. The reversal of 401023242 is 242320104.

401023242 is a `hidden beast` number, since 401 + 0 + 23 + 242 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 396447921 + 4575321 = 19911^2 + 2139^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 300403 + ... + 301734.

Almost surely, 2^401023242 is an apocalyptic number.

401023242 is an abundant number, since it is smaller than the sum of its proper divisors (491345274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401023242 is a wasteful number, since it uses less digits than its factorization.

401023242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602182 (or 602179 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 401023242 is about 20025.5647111386. The cubic root of 401023242 is about 737.4340407160.

Adding to 401023242 its reverse (242320104), we get a palindrome (643343346).

The spelling of 401023242 in words is "four hundred one million, twenty-three thousand, two hundred forty-two".