42100477 has 2 divisors, whose sum is σ = 42100478. Its totient is φ = 42100476.

The previous prime is 42100463. The next prime is 42100493. The reversal of 42100477 is 77400124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27154521 + 14945956 = 5211^2 + 3866^2 .

It is a cyclic number.

It is not a de Polignac number, because 42100477 - 2¹⁵ = 42067709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42104477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21050238 + 21050239.

It is an arithmetic number, because the mean of its divisors is an integer number (21050239).

Almost surely, 2^42100477 is an apocalyptic number.

It is an amenable number.

42100477 is a deficient number, since it is larger than the sum of its proper divisors (1).

42100477 is an equidigital number, since it uses as much as digits as its factorization.

42100477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 42100477 is about 6488.4880365151. The cubic root of 42100477 is about 347.8796347946.

The spelling of 42100477 in words is "forty-two million, one hundred thousand, four hundred seventy-seven".