142461989 has 8 divisors (see below), whose sum is σ = 151522560. Its totient is φ = 133477056.

The previous prime is 142461973. The next prime is 142462009. The reversal of 142461989 is 989164241.

142461989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 142461989 - 2⁴ = 142461973 is a prime.

It is a super-2 number, since 2×142461989² = 40590836619672242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142461919) 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, 14999 + ... + 22580.

It is an arithmetic number, because the mean of its divisors is an integer number (18940320).

Almost surely, 2^142461989 is an apocalyptic number.

It is an amenable number.

142461989 is a deficient number, since it is larger than the sum of its proper divisors (9060571).

142461989 is a wasteful number, since it uses less digits than its factorization.

142461989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37819.

The product of its digits is 124416, while the sum is 44.

The square root of 142461989 is about 11935.7441745373. The cubic root of 142461989 is about 522.2755172223.

The spelling of 142461989 in words is "one hundred forty-two million, four hundred sixty-one thousand, nine hundred eighty-nine".