43157154049 has 3 divisors (see below), whose sum is σ = 43157361793. Its totient is φ = 43156946306.

The previous prime is 43157154041. The next prime is 43157154071. The reversal of 43157154049 is 94045175134.

It is a happy number.

The square root of 43157154049 is 207743.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 43157154049 - 2³ = 43157154041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43157153996 and 43157154014.

It is not an unprimeable number, because it can be changed into a prime (43157154041) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 103872 + ... + 311614.

Almost surely, 2^43157154049 is an apocalyptic number.

43157154049 is the 207743-rd square number.

43157154049 is the 103872-nd centered octagonal number.

It is an amenable number.

43157154049 is a deficient number, since it is larger than the sum of its proper divisors (207744).

43157154049 is an frugal number, since it uses more digits than its factorization.

43157154049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415486 (or 207743 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 43157154049 in words is "forty-three billion, one hundred fifty-seven million, one hundred fifty-four thousand, forty-nine".