145145340 has 36 divisors (see below), whose sum is σ = 440274744. Its totient is φ = 38705376.

The previous prime is 145145333. The next prime is 145145347. The reversal of 145145340 is 43541541.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (145145333) and next prime (145145347).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145145347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 403002 + ... + 403361.

It is an arithmetic number, because the mean of its divisors is an integer number (12229854).

Almost surely, 2^145145340 is an apocalyptic number.

145145340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145145340 is an abundant number, since it is smaller than the sum of its proper divisors (295129404).

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

145145340 is a wasteful number, since it uses less digits than its factorization.

145145340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806378 (or 806373 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 145145340 is about 12047.6279823042. The cubic root of 145145340 is about 525.5342588557.

Adding to 145145340 its reverse (43541541), we get a palindrome (188686881).

The spelling of 145145340 in words is "one hundred forty-five million, one hundred forty-five thousand, three hundred forty".