201071434 has 4 divisors (see below), whose sum is σ = 301607154. Its totient is φ = 100535716.

The previous prime is 201071371. The next prime is 201071441. The reversal of 201071434 is 434170102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 129618225 + 71453209 = 11385^2 + 8453^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50267857 + ... + 50267860.

Almost surely, 2^201071434 is an apocalyptic number.

201071434 is a deficient number, since it is larger than the sum of its proper divisors (100535720).

201071434 is a wasteful number, since it uses less digits than its factorization.

201071434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100535719.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 201071434 is about 14179.9659378999. The cubic root of 201071434 is about 585.8459856872.

The spelling of 201071434 in words is "two hundred one million, seventy-one thousand, four hundred thirty-four".