1201055402 has 4 divisors (see below), whose sum is σ = 1801583106. Its totient is φ = 600527700.

The previous prime is 1201055399. The next prime is 1201055497. The reversal of 1201055402 is 2045501021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2045501021 = 23 ⋅88934827.

It can be written as a sum of positive squares in only one way, i.e., 766791481 + 434263921 = 27691^2 + 20839^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300263849 + ... + 300263852.

Almost surely, 2^1201055402 is an apocalyptic number.

1201055402 is a deficient number, since it is larger than the sum of its proper divisors (600527704).

1201055402 is an equidigital number, since it uses as much as digits as its factorization.

1201055402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600527703.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1201055402 is about 34656.2462191161. The cubic root of 1201055402 is about 1062.9700145558.

Adding to 1201055402 its reverse (2045501021), we get a palindrome (3246556423).

The spelling of 1201055402 in words is "one billion, two hundred one million, fifty-five thousand, four hundred two".