142711481 has 16 divisors (see below), whose sum is σ = 172015488. Its totient is φ = 116793600.

The previous prime is 142711477. The next prime is 142711493. The reversal of 142711481 is 184117241.

It is not a de Polignac number, because 142711481 - 2² = 142711477 is a prime.

It is a super-2 number, since 2×142711481² = 40733133618426722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142711381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12290 + ... + 20891.

It is an arithmetic number, because the mean of its divisors is an integer number (10750968).

Almost surely, 2^142711481 is an apocalyptic number.

142711481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142711481 is a deficient number, since it is larger than the sum of its proper divisors (29304007).

142711481 is a wasteful number, since it uses less digits than its factorization.

142711481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33232.

The product of its digits is 1792, while the sum is 29.

The square root of 142711481 is about 11946.1910666120. The cubic root of 142711481 is about 522.5802243979.

The spelling of 142711481 in words is "one hundred forty-two million, seven hundred eleven thousand, four hundred eighty-one".