126521941 has 16 divisors (see below), whose sum is σ = 159522048. Its totient is φ = 97660800.

The previous prime is 126521933. The next prime is 126521951. The reversal of 126521941 is 149125621.

It is a cyclic number.

It is not a de Polignac number, because 126521941 - 2³ = 126521933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126521951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13225 + ... + 20686.

It is an arithmetic number, because the mean of its divisors is an integer number (9970128).

Almost surely, 2^126521941 is an apocalyptic number.

It is an amenable number.

126521941 is a deficient number, since it is larger than the sum of its proper divisors (33000107).

126521941 is a wasteful number, since it uses less digits than its factorization.

126521941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33972.

The product of its digits is 4320, while the sum is 31.

The square root of 126521941 is about 11248.1972333348. The cubic root of 126521941 is about 502.0210741776.

The spelling of 126521941 in words is "one hundred twenty-six million, five hundred twenty-one thousand, nine hundred forty-one".