1201421242 has 16 divisors (see below), whose sum is σ = 2080814400. Its totient is φ = 509586048.

The previous prime is 1201421239. The next prime is 1201421257. The reversal of 1201421242 is 2421241021.

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, 440992 + ... + 443707.

It is an arithmetic number, because the mean of its divisors is an integer number (130050900).

Almost surely, 2^1201421242 is an apocalyptic number.

1201421242 is a deficient number, since it is larger than the sum of its proper divisors (879393158).

1201421242 is an equidigital number, since it uses as much as digits as its factorization.

1201421242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884805.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1201421242 is about 34661.5239422620. The cubic root of 1201421242 is about 1063.0779300531.

Adding to 1201421242 its reverse (2421241021), we get a palindrome (3622662263).

The spelling of 1201421242 in words is "one billion, two hundred one million, four hundred twenty-one thousand, two hundred forty-two".