147142731 has 8 divisors (see below), whose sum is σ = 196920720. Its totient is φ = 97729952.

The previous prime is 147142729. The next prime is 147142733. The reversal of 147142731 is 137241741.

It is an interprime number because it is at equal distance from previous prime (147142729) and next prime (147142733).

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 147142731 - 2¹ = 147142729 is a prime.

It is a super-2 number, since 2×147142731² = 43301966572276722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (147142733) 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, 90360 + ... + 91973.

It is an arithmetic number, because the mean of its divisors is an integer number (24615090).

Almost surely, 2^147142731 is an apocalyptic number.

147142731 is a deficient number, since it is larger than the sum of its proper divisors (49777989).

147142731 is a wasteful number, since it uses less digits than its factorization.

147142731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182605.

The product of its digits is 4704, while the sum is 30.

The square root of 147142731 is about 12130.2403521117. The cubic root of 147142731 is about 527.9339657145.

The spelling of 147142731 in words is "one hundred forty-seven million, one hundred forty-two thousand, seven hundred thirty-one".