142921667 has 16 divisors (see below), whose sum is σ = 173621760. Its totient is φ = 114918912.

The previous prime is 142921661. The next prime is 142921673. The reversal of 142921667 is 766129241.

It is an interprime number because it is at equal distance from previous prime (142921661) and next prime (142921673).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142921667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142921667.

It is not an unprimeable number, because it can be changed into a prime (142921661) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 8483 + ... + 18915.

It is an arithmetic number, because the mean of its divisors is an integer number (10851360).

Almost surely, 2^142921667 is an apocalyptic number.

142921667 is a deficient number, since it is larger than the sum of its proper divisors (30700093).

142921667 is a wasteful number, since it uses less digits than its factorization.

142921667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10562.

The product of its digits is 36288, while the sum is 38.

The square root of 142921667 is about 11954.9850271759. The cubic root of 142921667 is about 522.8366512497.

The spelling of 142921667 in words is "one hundred forty-two million, nine hundred twenty-one thousand, six hundred sixty-seven".