124740072 has 24 divisors (see below), whose sum is σ = 337837890. Its totient is φ = 41580000.

The previous prime is 124740013. The next prime is 124740079. The reversal of 124740072 is 270047421.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 124679556 + 60516 = 11166^2 + 246^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (124740079) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 866179 + ... + 866322.

Almost surely, 2^124740072 is an apocalyptic number.

124740072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

124740072 is an abundant number, since it is smaller than the sum of its proper divisors (213097818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

124740072 is a wasteful number, since it uses less digits than its factorization.

124740072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732513 (or 1732506 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 124740072 is about 11168.7095046832. The cubic root of 124740072 is about 499.6531888330.

Adding to 124740072 its reverse (270047421), we get a palindrome (394787493).

The spelling of 124740072 in words is "one hundred twenty-four million, seven hundred forty thousand, seventy-two".