402147194 has 4 divisors (see below), whose sum is σ = 603220794. Its totient is φ = 201073596.

The previous prime is 402147169. The next prime is 402147211. The reversal of 402147194 is 491741204.

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., 225390169 + 176757025 = 15013^2 + 13295^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 402147194.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100536797 + ... + 100536800.

Almost surely, 2^402147194 is an apocalyptic number.

402147194 is a deficient number, since it is larger than the sum of its proper divisors (201073600).

402147194 is a wasteful number, since it uses less digits than its factorization.

402147194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201073599.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 402147194 is about 20053.6080045462. The cubic root of 402147194 is about 738.1223360967.

Adding to 402147194 its reverse (491741204), we get a palindrome (893888398).

It can be divided in two parts, 4021 and 47194, that added together give a palindrome (51215).

The spelling of 402147194 in words is "four hundred two million, one hundred forty-seven thousand, one hundred ninety-four".