434021402 has 4 divisors (see below), whose sum is σ = 651032106. Its totient is φ = 217010700.

The previous prime is 434021387. The next prime is 434021437. The reversal of 434021402 is 204120434.

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., 377486041 + 56535361 = 19429^2 + 7519^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108505349 + ... + 108505352.

Almost surely, 2^434021402 is an apocalyptic number.

434021402 is a deficient number, since it is larger than the sum of its proper divisors (217010704).

434021402 is a wasteful number, since it uses less digits than its factorization.

434021402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217010703.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 434021402 is about 20833.1803141047. The cubic root of 434021402 is about 757.1298729503.

Adding to 434021402 its reverse (204120434), we get a palindrome (638141836).

The spelling of 434021402 in words is "four hundred thirty-four million, twenty-one thousand, four hundred two".