35742981 has 4 divisors (see below), whose sum is σ = 47657312. Its totient is φ = 23828652.

The previous prime is 35742979. The next prime is 35743013. The reversal of 35742981 is 18924753.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 35742981 - 2¹ = 35742979 is a prime.

It is a super-2 number, since 2×35742981² = 2555121381532722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35742911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5957161 + ... + 5957166.

It is an arithmetic number, because the mean of its divisors is an integer number (11914328).

Almost surely, 2^35742981 is an apocalyptic number.

It is an amenable number.

35742981 is a deficient number, since it is larger than the sum of its proper divisors (11914331).

35742981 is a wasteful number, since it uses less digits than its factorization.

35742981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11914330.

The product of its digits is 60480, while the sum is 39.

The square root of 35742981 is about 5978.5433844708. The cubic root of 35742981 is about 329.4050529176.

It can be divided in two parts, 3574 and 2981, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 35742981 in words is "thirty-five million, seven hundred forty-two thousand, nine hundred eighty-one".