42489701 has 2 divisors, whose sum is σ = 42489702. Its totient is φ = 42489700.

The previous prime is 42489697. The next prime is 42489709. The reversal of 42489701 is 10798424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33339076 + 9150625 = 5774^2 + 3025^2 .

It is a cyclic number.

It is not a de Polignac number, because 42489701 - 2² = 42489697 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42489709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21244850 + 21244851.

It is an arithmetic number, because the mean of its divisors is an integer number (21244851).

Almost surely, 2^42489701 is an apocalyptic number.

It is an amenable number.

42489701 is a deficient number, since it is larger than the sum of its proper divisors (1).

42489701 is an equidigital number, since it uses as much as digits as its factorization.

42489701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 42489701 is about 6518.4124601010. The cubic root of 42489701 is about 348.9484109699.

The spelling of 42489701 in words is "forty-two million, four hundred eighty-nine thousand, seven hundred one".