145380040 has 32 divisors (see below), whose sum is σ = 352268280. Its totient is φ = 53678592.

The previous prime is 145380023. The next prime is 145380083. The reversal of 145380040 is 40083541.

It can be written as a sum of positive squares in 4 ways, for example, as 68326756 + 77053284 = 8266^2 + 8778^2 .

It is a super-2 number, since 2×145380040² = 42270712060803200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145379987 and 145380014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139269 + ... + 140308.

Almost surely, 2^145380040 is an apocalyptic number.

145380040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145380040 is an abundant number, since it is smaller than the sum of its proper divisors (206888240).

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

145380040 is a wasteful number, since it uses less digits than its factorization.

145380040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279601 (or 279597 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 145380040 is about 12057.3645544953. The cubic root of 145380040 is about 525.8173692616.

The spelling of 145380040 in words is "one hundred forty-five million, three hundred eighty thousand, forty".