126890 has 8 divisors (see below), whose sum is σ = 228420. Its totient is φ = 50752.

The previous prime is 126859. The next prime is 126913. The reversal of 126890 is 98621.

It can be written as a sum of positive squares in 2 ways, for example, as 116281 + 10609 = 341^2 + 103^2 .

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

It is a super-2 number, since 2×126890² = 32202144200, which contains 22 as substring.

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6335 + ... + 6354.

2¹²⁶⁸⁹⁰ is an apocalyptic number.

126890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126890 is a deficient number, since it is larger than the sum of its proper divisors (101530).

126890 is a wasteful number, since it uses less digits than its factorization.

126890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12696.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 126890 is about 356.2162264693. The cubic root of 126890 is about 50.2507404823.

The spelling of 126890 in words is "one hundred twenty-six thousand, eight hundred ninety".