142581830 has 16 divisors (see below), whose sum is σ = 267806304. Its totient is φ = 54552960.

The previous prime is 142581823. The next prime is 142581847. The reversal of 142581830 is 38185241.

It is a super-2 number, since 2×142581830² = 40659156492297800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309731 + ... + 310190.

It is an arithmetic number, because the mean of its divisors is an integer number (16737894).

Almost surely, 2^142581830 is an apocalyptic number.

142581830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142581830 is a deficient number, since it is larger than the sum of its proper divisors (125224474).

142581830 is a wasteful number, since it uses less digits than its factorization.

142581830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619951.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 142581830 is about 11940.7633759320. The cubic root of 142581830 is about 522.4219246450.

The spelling of 142581830 in words is "one hundred forty-two million, five hundred eighty-one thousand, eight hundred thirty".