142459749 has 16 divisors (see below), whose sum is σ = 212667840. Its totient is φ = 94245840.

The previous prime is 142459727. The next prime is 142459753. The reversal of 142459749 is 947954241.

142459749 is a `hidden beast` number, since 14 + 2 + 4 + 597 + 49 = 666.

It is not a de Polignac number, because 142459749 - 2⁵ = 142459717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142459799) 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, 16602 + ... + 23675.

It is an arithmetic number, because the mean of its divisors is an integer number (13291740).

Almost surely, 2^142459749 is an apocalyptic number.

It is an amenable number.

142459749 is a deficient number, since it is larger than the sum of its proper divisors (70208091).

142459749 is a wasteful number, since it uses less digits than its factorization.

142459749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40417 (or 40411 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 142459749 is about 11935.6503383770. The cubic root of 142459749 is about 522.2727798763.

The spelling of 142459749 in words is "one hundred forty-two million, four hundred fifty-nine thousand, seven hundred forty-nine".