434345642 has 4 divisors (see below), whose sum is σ = 651518466. Its totient is φ = 217172820.

The previous prime is 434345641. The next prime is 434345663. The reversal of 434345642 is 246543434.

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., 366760801 + 67584841 = 19151^2 + 8221^2 .

It is a super-2 number, since 2×434345642² = 377312273448784328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (434345641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108586409 + ... + 108586412.

Almost surely, 2^434345642 is an apocalyptic number.

434345642 is a deficient number, since it is larger than the sum of its proper divisors (217172824).

434345642 is a wasteful number, since it uses less digits than its factorization.

434345642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217172823.

The product of its digits is 138240, while the sum is 35.

The square root of 434345642 is about 20840.9606784332. The cubic root of 434345642 is about 757.3183664838.

The spelling of 434345642 in words is "four hundred thirty-four million, three hundred forty-five thousand, six hundred forty-two".