201201420442 has 16 divisors (see below), whose sum is σ = 336243768192. Its totient is φ = 89509335520.

The previous prime is 201201420437. The next prime is 201201420457. The reversal of 201201420442 is 244024102102.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97291723 + ... + 97293790.

It is an arithmetic number, because the mean of its divisors is an integer number (21015235512).

Almost surely, 2^201201420442 is an apocalyptic number.

201201420442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

201201420442 is a deficient number, since it is larger than the sum of its proper divisors (135042347750).

201201420442 is a wasteful number, since it uses less digits than its factorization.

201201420442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194585573.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 201201420442 its reverse (244024102102), we get a palindrome (445225522544).

The spelling of 201201420442 in words is "two hundred one billion, two hundred one million, four hundred twenty thousand, four hundred forty-two".