142505013 has 8 divisors (see below), whose sum is σ = 217150528. Its totient is φ = 81431424.

The previous prime is 142505009. The next prime is 142505017. The reversal of 142505013 is 310505241.

It is an interprime number because it is at equal distance from previous prime (142505009) and next prime (142505017).

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

It is not a de Polignac number, because 142505013 - 2² = 142505009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 6785953 = 142505013 / (1 + 4 + 2 + 5 + 0 + 5 + 0 + 1 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142505017) 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, 3392956 + ... + 3392997.

It is an arithmetic number, because the mean of its divisors is an integer number (27143816).

Almost surely, 2^142505013 is an apocalyptic number.

It is an amenable number.

142505013 is a deficient number, since it is larger than the sum of its proper divisors (74645515).

142505013 is an equidigital number, since it uses as much as digits as its factorization.

142505013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6785963.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 142505013 is about 11937.5463559309. The cubic root of 142505013 is about 522.3280882516.

The spelling of 142505013 in words is "one hundred forty-two million, five hundred five thousand, thirteen".