145020340 has 48 divisors (see below), whose sum is σ = 313286400. Its totient is φ = 56367360.

The previous prime is 145020307. The next prime is 145020341. The reversal of 145020340 is 43020541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145020341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102961 + ... + 104359.

It is an arithmetic number, because the mean of its divisors is an integer number (6526800).

Almost surely, 2^145020340 is an apocalyptic number.

145020340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145020340 is an abundant number, since it is smaller than the sum of its proper divisors (168266060).

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

145020340 is a wasteful number, since it uses less digits than its factorization.

145020340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552 (or 1550 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 145020340 is about 12042.4391217062. The cubic root of 145020340 is about 525.3833511530.

Adding to 145020340 its reverse (43020541), we get a palindrome (188040881).

The spelling of 145020340 in words is "one hundred forty-five million, twenty thousand, three hundred forty".