4212423157 has 2 divisors, whose sum is σ = 4212423158. Its totient is φ = 4212423156.

The previous prime is 4212423121. The next prime is 4212423209. The reversal of 4212423157 is 7513242124.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2947838436 + 1264584721 = 54294^2 + 35561^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4212423157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4212433157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2106211578 + 2106211579.

It is an arithmetic number, because the mean of its divisors is an integer number (2106211579).

Almost surely, 2^4212423157 is an apocalyptic number.

It is an amenable number.

4212423157 is a deficient number, since it is larger than the sum of its proper divisors (1).

4212423157 is an equidigital number, since it uses as much as digits as its factorization.

4212423157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 31.

The square root of 4212423157 is about 64903.1829496828. The cubic root of 4212423157 is about 1615.0178640587.

The spelling of 4212423157 in words is "four billion, two hundred twelve million, four hundred twenty-three thousand, one hundred fifty-seven".