145442040 has 32 divisors (see below), whose sum is σ = 436326480. Its totient is φ = 38784512.

The previous prime is 145442027. The next prime is 145442057. The reversal of 145442040 is 40244541.

It is a happy number.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 145442040.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 605889 + ... + 606128.

Almost surely, 2^145442040 is an apocalyptic number.

145442040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145442040 is an abundant number, since it is smaller than the sum of its proper divisors (290884440).

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

145442040 is a wasteful number, since it uses less digits than its factorization.

145442040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212031 (or 1212027 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 145442040 is about 12059.9353232097. The cubic root of 145442040 is about 525.8921068107.

Adding to 145442040 its reverse (40244541), we get a palindrome (185686581).

The spelling of 145442040 in words is "one hundred forty-five million, four hundred forty-two thousand, forty".