123537947 has 8 divisors (see below), whose sum is σ = 134644944. Its totient is φ = 112660128.

The previous prime is 123537923. The next prime is 123537959. The reversal of 123537947 is 749735321.

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 123537947 - 2¹⁰ = 123536923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123537047) 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, 56168 + ... + 58325.

It is an arithmetic number, because the mean of its divisors is an integer number (16830618).

Almost surely, 2^123537947 is an apocalyptic number.

123537947 is a deficient number, since it is larger than the sum of its proper divisors (11106997).

123537947 is a wasteful number, since it uses less digits than its factorization.

123537947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114589.

The product of its digits is 158760, while the sum is 41.

The square root of 123537947 is about 11114.7625705635. The cubic root of 123537947 is about 498.0429458725.

The spelling of 123537947 in words is "one hundred twenty-three million, five hundred thirty-seven thousand, nine hundred forty-seven".