124949971 has 4 divisors (see below), whose sum is σ = 125001000. Its totient is φ = 124898944.

The previous prime is 124949953. The next prime is 124950011. The reversal of 124949971 is 179949421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 124949971 - 2⁷ = 124949843 is a prime.

It is a super-2 number, since 2×124949971² = 31224990505801682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124949941) 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, 21646 + ... + 26803.

It is an arithmetic number, because the mean of its divisors is an integer number (31250250).

Almost surely, 2^124949971 is an apocalyptic number.

124949971 is a deficient number, since it is larger than the sum of its proper divisors (51029).

124949971 is an equidigital number, since it uses as much as digits as its factorization.

124949971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51028.

The product of its digits is 163296, while the sum is 46.

The square root of 124949971 is about 11178.1022986910. The cubic root of 124949971 is about 499.9332857655.

The spelling of 124949971 in words is "one hundred twenty-four million, nine hundred forty-nine thousand, nine hundred seventy-one".