42998901 has 16 divisors (see below), whose sum is σ = 62779968. Its totient is φ = 25961600.

The previous prime is 42998887. The next prime is 42998939. The reversal of 42998901 is 10989924.

42998901 is a nontrivial binomial coefficient, being equal to C(9274, 2).

It is a 4-Lehmer number, since φ(42998901) divides (42998901-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 42998901 - 2⁵ = 42998869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42998941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6955 + ... + 11591.

It is an arithmetic number, because the mean of its divisors is an integer number (3923748).

It is a Poulet number, since it divides 2^42998900-1.

Almost surely, 2^42998901 is an apocalyptic number.

42998901 is the 9273-rd triangular number and also the 4637-th hexagonal number.

It is an amenable number.

42998901 is a deficient number, since it is larger than the sum of its proper divisors (19781067).

42998901 is a wasteful number, since it uses less digits than its factorization.

42998901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4932.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 42998901 is about 6557.3547258022. The cubic root of 42998901 is about 350.3368213354.

The spelling of 42998901 in words is "forty-two million, nine hundred ninety-eight thousand, nine hundred one".