65142480 has 80 divisors (see below), whose sum is σ = 217486080. Its totient is φ = 16034304.

The previous prime is 65142421. The next prime is 65142503. The reversal of 65142480 is 8424156.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7320 + ... + 13559.

It is an arithmetic number, because the mean of its divisors is an integer number (2718576).

Almost surely, 2^65142480 is an apocalyptic number.

65142480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65142480 is an abundant number, since it is smaller than the sum of its proper divisors (152343600).

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

65142480 is a wasteful number, since it uses less digits than its factorization.

65142480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20908 (or 20902 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 65142480 is about 8071.0891458340. The cubic root of 65142480 is about 402.3661424927.

The spelling of 65142480 in words is "sixty-five million, one hundred forty-two thousand, four hundred eighty".