126978498 has 12 divisors (see below), whose sum is σ = 275120118. Its totient is φ = 42326160.

The previous prime is 126978493. The next prime is 126978521. The reversal of 126978498 is 894879621.

It can be written as a sum of positive squares in only one way, i.e., 63728289 + 63250209 = 7983^2 + 7953^2 .

It is a super-2 number, since 2×126978498² = 32247077908672008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126978493) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3527163 + ... + 3527198.

Almost surely, 2^126978498 is an apocalyptic number.

126978498 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

126978498 is an abundant number, since it is smaller than the sum of its proper divisors (148141620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126978498 is a wasteful number, since it uses less digits than its factorization.

126978498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7054369 (or 7054366 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 126978498 is about 11268.4736322183. The cubic root of 126978498 is about 502.6242003829.

The spelling of 126978498 in words is "one hundred twenty-six million, nine hundred seventy-eight thousand, four hundred ninety-eight".