42129976449 has 16 divisors (see below), whose sum is σ = 61301732544. Its totient is φ = 25524249600.

The previous prime is 42129976409. The next prime is 42129976451. The reversal of 42129976449 is 94467992124.

It is not a de Polignac number, because 42129976449 - 2⁸ = 42129976193 is a prime.

It is a super-3 number, since 3×42129976449³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (42129976409) 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, 131832 + ... + 318809.

It is an arithmetic number, because the mean of its divisors is an integer number (3831358284).

Almost surely, 2^42129976449 is an apocalyptic number.

It is an amenable number.

42129976449 is a deficient number, since it is larger than the sum of its proper divisors (19171756095).

42129976449 is a wasteful number, since it uses less digits than its factorization.

42129976449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453488.

The product of its digits is 7838208, while the sum is 57.

The spelling of 42129976449 in words is "forty-two billion, one hundred twenty-nine million, nine hundred seventy-six thousand, four hundred forty-nine".