126870641 has 4 divisors (see below), whose sum is σ = 126893172. Its totient is φ = 126848112.

The previous prime is 126870617. The next prime is 126870647. The reversal of 126870641 is 146078621.

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 can be written as a sum of positive squares in 2 ways, for example, as 73273600 + 53597041 = 8560^2 + 7321^2 .

It is a cyclic number.

It is not a de Polignac number, because 126870641 - 2⁶ = 126870577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126870647) 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, 5375 + ... + 16811.

It is an arithmetic number, because the mean of its divisors is an integer number (31723293).

Almost surely, 2^126870641 is an apocalyptic number.

It is an amenable number.

126870641 is a deficient number, since it is larger than the sum of its proper divisors (22531).

126870641 is a wasteful number, since it uses less digits than its factorization.

126870641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22530.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 126870641 is about 11263.6868298084. The cubic root of 126870641 is about 502.4818484735.

The spelling of 126870641 in words is "one hundred twenty-six million, eight hundred seventy thousand, six hundred forty-one".