126145669 has 8 divisors (see below), whose sum is σ = 136069472. Its totient is φ = 116253360.

The previous prime is 126145637. The next prime is 126145673. The reversal of 126145669 is 966541621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126145669 - 2⁵ = 126145637 is a prime.

It is a super-2 number, since 2×126145669² = 31825459614915122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126149669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 814 + ... + 15904.

It is an arithmetic number, because the mean of its divisors is an integer number (17008684).

Almost surely, 2^126145669 is an apocalyptic number.

It is an amenable number.

126145669 is a deficient number, since it is larger than the sum of its proper divisors (9923803).

126145669 is a wasteful number, since it uses less digits than its factorization.

126145669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15747.

The product of its digits is 77760, while the sum is 40.

The square root of 126145669 is about 11231.4588990033. The cubic root of 126145669 is about 501.5229154145.

The spelling of 126145669 in words is "one hundred twenty-six million, one hundred forty-five thousand, six hundred sixty-nine".