145040071 has 4 divisors (see below), whose sum is σ = 158225544. Its totient is φ = 131854600.

The previous prime is 145040057. The next prime is 145040081. The reversal of 145040071 is 170040541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145040071 - 2⁷ = 145039943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145040011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6592720 + ... + 6592741.

It is an arithmetic number, because the mean of its divisors is an integer number (39556386).

Almost surely, 2^145040071 is an apocalyptic number.

145040071 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145040071 is a deficient number, since it is larger than the sum of its proper divisors (13185473).

145040071 is a wasteful number, since it uses less digits than its factorization.

145040071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13185472.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 145040071 is about 12043.2583215673. The cubic root of 145040071 is about 525.4071773942.

The spelling of 145040071 in words is "one hundred forty-five million, forty thousand, seventy-one".