42021127 has 16 divisors (see below), whose sum is σ = 45826560. Its totient is φ = 38383488.

The previous prime is 42021121. The next prime is 42021139. The reversal of 42021127 is 72112024.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42021127 is a prime.

It is a super-2 number, since 2×42021127² = 3531550228700258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42021121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89748 + ... + 90214.

It is an arithmetic number, because the mean of its divisors is an integer number (2864160).

Almost surely, 2^42021127 is an apocalyptic number.

42021127 is the 5293-rd pentagonal number.

42021127 is a deficient number, since it is larger than the sum of its proper divisors (3805433).

42021127 is a wasteful number, since it uses less digits than its factorization.

42021127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 42021127 is about 6482.3704769166. The cubic root of 42021127 is about 347.6609388574.

It can be divided in two parts, 4202 and 1127, that added together give a square (5329 = 73²).

The spelling of 42021127 in words is "forty-two million, twenty-one thousand, one hundred twenty-seven".