145061940 has 48 divisors (see below), whose sum is σ = 409393152. Its totient is φ = 38376576.

The previous prime is 145061923. The next prime is 145061947. The reversal of 145061940 is 49160541.

It is a happy number.

145061940 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 145061898 and 145061907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145061947) 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, 1899 + ... + 17138.

It is an arithmetic number, because the mean of its divisors is an integer number (8529024).

Almost surely, 2^145061940 is an apocalyptic number.

145061940 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 145061940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204696576).

145061940 is an abundant number, since it is smaller than the sum of its proper divisors (264331212).

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

145061940 is a wasteful number, since it uses less digits than its factorization.

145061940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19176 (or 19174 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 145061940 is about 12044.1662226989. The cubic root of 145061940 is about 525.4335828605.

The spelling of 145061940 in words is "one hundred forty-five million, sixty-one thousand, nine hundred forty".