126920091 has 8 divisors (see below), whose sum is σ = 169707600. Its totient is φ = 84372992.

The previous prime is 126920041. The next prime is 126920093. The reversal of 126920091 is 190029621.

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 126920091 - 2¹⁵ = 126887323 is a prime.

It is a super-2 number, since 2×126920091² = 32217418998896562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126920093) 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, 58866 + ... + 60983.

It is an arithmetic number, because the mean of its divisors is an integer number (21213450).

Almost surely, 2^126920091 is an apocalyptic number.

126920091 is a deficient number, since it is larger than the sum of its proper divisors (42787509).

126920091 is a wasteful number, since it uses less digits than its factorization.

126920091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120205.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 126920091 is about 11265.8817231498. The cubic root of 126920091 is about 502.5471236221.

The spelling of 126920091 in words is "one hundred twenty-six million, nine hundred twenty thousand, ninety-one".