60145040 has 20 divisors (see below), whose sum is σ = 139837404. Its totient is φ = 24057984.

The previous prime is 60145039. The next prime is 60145049. The reversal of 60145040 is 4054106.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 34904464 + 25240576 = 5908^2 + 5024^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60145049) 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, 375827 + ... + 375986.

Almost surely, 2^60145040 is an apocalyptic number.

It is an amenable number.

60145040 is an abundant number, since it is smaller than the sum of its proper divisors (79692364).

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

60145040 is a wasteful number, since it uses less digits than its factorization.

60145040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751826 (or 751820 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 60145040 is about 7755.3233330403. The cubic root of 60145040 is about 391.8019616088.

Adding to 60145040 its reverse (4054106), we get a palindrome (64199146).

The spelling of 60145040 in words is "sixty million, one hundred forty-five thousand, forty".