126377869 has 4 divisors (see below), whose sum is σ = 126844480. Its totient is φ = 125911260.

The previous prime is 126377861. The next prime is 126377887. The reversal of 126377869 is 968773621.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 968773621 = 2917 ⋅332113.

It is a cyclic number.

It is not a de Polignac number, because 126377869 - 2³ = 126377861 is a prime.

It is a super-2 number, since 2×126377869² = 31942731545962322, 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 (126377861) 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, 232899 + ... + 233440.

It is an arithmetic number, because the mean of its divisors is an integer number (31711120).

Almost surely, 2^126377869 is an apocalyptic number.

It is an amenable number.

126377869 is a deficient number, since it is larger than the sum of its proper divisors (466611).

126377869 is an equidigital number, since it uses as much as digits as its factorization.

126377869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466610.

The product of its digits is 762048, while the sum is 49.

The square root of 126377869 is about 11241.7911829032. The cubic root of 126377869 is about 501.8304493993.

The spelling of 126377869 in words is "one hundred twenty-six million, three hundred seventy-seven thousand, eight hundred sixty-nine".