40420153 has 4 divisors (see below), whose sum is σ = 40444560. Its totient is φ = 40395748.

The previous prime is 40420147. The next prime is 40420157. The reversal of 40420153 is 35102404.

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 40420153 - 2⁹ = 40419641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40420153.

It is not an unprimeable number, because it can be changed into a prime (40420157) 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, 9523 + ... + 13096.

It is an arithmetic number, because the mean of its divisors is an integer number (10111140).

Almost surely, 2^40420153 is an apocalyptic number.

It is an amenable number.

40420153 is a deficient number, since it is larger than the sum of its proper divisors (24407).

40420153 is a wasteful number, since it uses less digits than its factorization.

40420153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24406.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 40420153 is about 6357.6845627949. The cubic root of 40420153 is about 343.1884403431.

Adding to 40420153 its reverse (35102404), we get a palindrome (75522557).

The spelling of 40420153 in words is "forty million, four hundred twenty thousand, one hundred fifty-three".