126640054 has 16 divisors (see below), whose sum is σ = 200343600. Its totient is φ = 59871744.

The previous prime is 126640049. The next prime is 126640109. The reversal of 126640054 is 450046621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18694 + ... + 24550.

It is an arithmetic number, because the mean of its divisors is an integer number (12521475).

Almost surely, 2^126640054 is an apocalyptic number.

126640054 is a deficient number, since it is larger than the sum of its proper divisors (73703546).

126640054 is a wasteful number, since it uses less digits than its factorization.

126640054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6447.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 126640054 is about 11253.4463165734. The cubic root of 126640054 is about 502.1772441214.

Adding to 126640054 its reverse (450046621), we get a palindrome (576686675).

The spelling of 126640054 in words is "one hundred twenty-six million, six hundred forty thousand, fifty-four".