145102540 has 48 divisors (see below), whose sum is σ = 334613664. Its totient is φ = 52416000.

The previous prime is 145102523. The next prime is 145102541. The reversal of 145102540 is 45201541.

It is a super-2 number, since 2×145102540² = 42109494228903200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (145102541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32440 + ... + 36640.

It is an arithmetic number, because the mean of its divisors is an integer number (6971118).

Almost surely, 2^145102540 is an apocalyptic number.

145102540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145102540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167306832).

145102540 is an abundant number, since it is smaller than the sum of its proper divisors (189511124).

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

145102540 is a wasteful number, since it uses less digits than its factorization.

145102540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4378 (or 4376 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 145102540 is about 12045.8515680711. The cubic root of 145102540 is about 525.4825978160.

Subtracting from 145102540 its reverse (45201541), we obtain a palindrome (99900999).

The spelling of 145102540 in words is "one hundred forty-five million, one hundred two thousand, five hundred forty".