61426140 has 24 divisors (see below), whose sum is σ = 171993360. Its totient is φ = 16380288.

The previous prime is 61426129. The next prime is 61426153. The reversal of 61426140 is 4162416.

It is a self number, because there is not a number n which added to its sum of digits gives 61426140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511825 + ... + 511944.

It is an arithmetic number, because the mean of its divisors is an integer number (7166390).

Almost surely, 2^61426140 is an apocalyptic number.

61426140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61426140 is an abundant number, since it is smaller than the sum of its proper divisors (110567220).

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

61426140 is a wasteful number, since it uses less digits than its factorization.

61426140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023781 (or 1023779 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 61426140 is about 7837.4830143357. The cubic root of 61426140 is about 394.5642580474.

Adding to 61426140 its reverse (4162416), we get a palindrome (65588556).

The spelling of 61426140 in words is "sixty-one million, four hundred twenty-six thousand, one hundred forty".