43142254657 has 4 divisors (see below), whose sum is σ = 43183778560. Its totient is φ = 43100730756.

The previous prime is 43142254651. The next prime is 43142254693. The reversal of 43142254657 is 75645224134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43142254657 - 2¹⁹ = 43141730369 is a prime.

It is a super-2 number, since 2×43142254657² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43142254651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20760393 + ... + 20762470.

It is an arithmetic number, because the mean of its divisors is an integer number (10795944640).

Almost surely, 2^43142254657 is an apocalyptic number.

It is an amenable number.

43142254657 is a deficient number, since it is larger than the sum of its proper divisors (41523903).

43142254657 is a wasteful number, since it uses less digits than its factorization.

43142254657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41523902.

The product of its digits is 806400, while the sum is 43.

The spelling of 43142254657 in words is "forty-three billion, one hundred forty-two million, two hundred fifty-four thousand, six hundred fifty-seven".