126897434 has 4 divisors (see below), whose sum is σ = 190346154. Its totient is φ = 63448716.

The previous prime is 126897431. The next prime is 126897451. The reversal of 126897434 is 434798621.

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., 126000625 + 896809 = 11225^2 + 947^2 .

It is a super-2 number, since 2×126897434² = 32205917511568712, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (126897431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31724357 + ... + 31724360.

Almost surely, 2^126897434 is an apocalyptic number.

126897434 is a deficient number, since it is larger than the sum of its proper divisors (63448720).

126897434 is an equidigital number, since it uses as much as digits as its factorization.

126897434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63448719.

The product of its digits is 290304, while the sum is 44.

The square root of 126897434 is about 11264.8761200468. The cubic root of 126897434 is about 502.5172179607.

The spelling of 126897434 in words is "one hundred twenty-six million, eight hundred ninety-seven thousand, four hundred thirty-four".