401210442 has 32 divisors (see below), whose sum is σ = 893246400. Its totient is φ = 133486704.

The previous prime is 401210437. The next prime is 401210449. The reversal of 401210442 is 244012104.

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

It is not an unprimeable number, because it can be changed into a prime (401210449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23409 + ... + 36747.

It is an arithmetic number, because the mean of its divisors is an integer number (27913950).

Almost surely, 2^401210442 is an apocalyptic number.

401210442 is an abundant number, since it is smaller than the sum of its proper divisors (492035958).

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

401210442 is a wasteful number, since it uses less digits than its factorization.

401210442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13907 (or 13901 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 401210442 is about 20030.2381912947. The cubic root of 401210442 is about 737.5487690435.

Adding to 401210442 its reverse (244012104), we get a palindrome (645222546).

The spelling of 401210442 in words is "four hundred one million, two hundred ten thousand, four hundred forty-two".