126401390 has 16 divisors (see below), whose sum is σ = 227709360. Its totient is φ = 50519040.

The previous prime is 126401323. The next prime is 126401393. The reversal of 126401390 is 93104621.

It is a super-2 number, since 2×126401390² = 31954622787864200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126401393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9605 + ... + 18575.

It is an arithmetic number, because the mean of its divisors is an integer number (14231835).

Almost surely, 2^126401390 is an apocalyptic number.

126401390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126401390 is a deficient number, since it is larger than the sum of its proper divisors (101307970).

126401390 is a wasteful number, since it uses less digits than its factorization.

126401390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10387.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 126401390 is about 11242.8372753500. The cubic root of 126401390 is about 501.8615804349.

The spelling of 126401390 in words is "one hundred twenty-six million, four hundred one thousand, three hundred ninety".