144715021 has 8 divisors (see below), whose sum is σ = 161230464. Its totient is φ = 128759520.

The previous prime is 144715009. The next prime is 144715027. The reversal of 144715021 is 120517441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144715021 - 2⁷ = 144714893 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 (144715027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139440 + ... + 140473.

It is an arithmetic number, because the mean of its divisors is an integer number (20153808).

Almost surely, 2^144715021 is an apocalyptic number.

144715021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144715021 is a deficient number, since it is larger than the sum of its proper divisors (16515443).

144715021 is a wasteful number, since it uses less digits than its factorization.

144715021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279971.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 144715021 is about 12029.7556500537. The cubic root of 144715021 is about 525.0143863027.

The spelling of 144715021 in words is "one hundred forty-four million, seven hundred fifteen thousand, twenty-one".