126428077 has 4 divisors (see below), whose sum is σ = 126457056. Its totient is φ = 126399100.

The previous prime is 126428059. The next prime is 126428087. The reversal of 126428077 is 770824621.

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 a de Polignac number, because none of the positive numbers 2^k-126428077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126428017) 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, 6463 + ... + 17164.

It is an arithmetic number, because the mean of its divisors is an integer number (31614264).

Almost surely, 2^126428077 is an apocalyptic number.

It is an amenable number.

126428077 is a deficient number, since it is larger than the sum of its proper divisors (28979).

126428077 is an equidigital number, since it uses as much as digits as its factorization.

126428077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28978.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 126428077 is about 11244.0240572493. The cubic root of 126428077 is about 501.8968971286.

The spelling of 126428077 in words is "one hundred twenty-six million, four hundred twenty-eight thousand, seventy-seven".