4020137 has 4 divisors (see below), whose sum is σ = 4385616. Its totient is φ = 3654660.

The previous prime is 4020119. The next prime is 4020139. The reversal of 4020137 is 7310204.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 4020137 - 2¹² = 4016041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4020139) 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, 182723 + ... + 182744.

It is an arithmetic number, because the mean of its divisors is an integer number (1096404).

Almost surely, 2^4020137 is an apocalyptic number.

It is an amenable number.

4020137 is a deficient number, since it is larger than the sum of its proper divisors (365479).

4020137 is a wasteful number, since it uses less digits than its factorization.

4020137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365478.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 4020137 is about 2005.0279299800. The cubic root of 4020137 is about 159.0060385613.

The spelling of 4020137 in words is "four million, twenty thousand, one hundred thirty-seven".