42021153 has 8 divisors (see below), whose sum is σ = 62253600. Its totient is φ = 28014084.

The previous prime is 42021143. The next prime is 42021173. The reversal of 42021153 is 35112024.

It is not a de Polignac number, because 42021153 - 2⁵ = 42021121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42021143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 778143 + ... + 778196.

It is an arithmetic number, because the mean of its divisors is an integer number (7781700).

Almost surely, 2^42021153 is an apocalyptic number.

It is an amenable number.

42021153 is a deficient number, since it is larger than the sum of its proper divisors (20232447).

42021153 is a wasteful number, since it uses less digits than its factorization.

42021153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556348 (or 1556342 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 42021153 is about 6482.3724823555. The cubic root of 42021153 is about 347.6610105609.

Adding to 42021153 its reverse (35112024), we get a palindrome (77133177).

The spelling of 42021153 in words is "forty-two million, twenty-one thousand, one hundred fifty-three".