126920947 has 2 divisors, whose sum is σ = 126920948. Its totient is φ = 126920946.

The previous prime is 126920933. The next prime is 126920951. The reversal of 126920947 is 749029621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126920947 - 2¹⁹ = 126396659 is a prime.

It is a super-2 number, since 2×126920947² = 32217853574753618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126920917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63460473 + 63460474.

It is an arithmetic number, because the mean of its divisors is an integer number (63460474).

Almost surely, 2^126920947 is an apocalyptic number.

126920947 is a deficient number, since it is larger than the sum of its proper divisors (1).

126920947 is an equidigital number, since it uses as much as digits as its factorization.

126920947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 126920947 is about 11265.9197138982. The cubic root of 126920947 is about 502.5482534127.

The spelling of 126920947 in words is "one hundred twenty-six million, nine hundred twenty thousand, nine hundred forty-seven".