126510004 has 6 divisors (see below), whose sum is σ = 221392514. Its totient is φ = 63255000.

The previous prime is 126509989. The next prime is 126510023. The reversal of 126510004 is 400015621.

It can be written as a sum of positive squares in only one way, i.e., 87422500 + 39087504 = 9350^2 + 6252^2 .

It is a super-2 number, since 2×126510004² = 32009562224160032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15813747 + ... + 15813754.

Almost surely, 2^126510004 is an apocalyptic number.

It is an amenable number.

126510004 is a deficient number, since it is larger than the sum of its proper divisors (94882510).

126510004 is a wasteful number, since it uses less digits than its factorization.

126510004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31627505 (or 31627503 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 126510004 is about 11247.6666024558. Note that the first 4 decimals coincide. The cubic root of 126510004 is about 502.0052855747.

Adding to 126510004 its reverse (400015621), we get a palindrome (526525625).

The spelling of 126510004 in words is "one hundred twenty-six million, five hundred ten thousand, four".