254402040 has 32 divisors (see below), whose sum is σ = 763206480. Its totient is φ = 67840512.

The previous prime is 254402033. The next prime is 254402111. The reversal of 254402040 is 40204452.

It is a junction number, because it is equal to n+sod(n) for n = 254401998 and 254402016.

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, 1059889 + ... + 1060128.

Almost surely, 2^254402040 is an apocalyptic number.

254402040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

254402040 is an abundant number, since it is smaller than the sum of its proper divisors (508804440).

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

254402040 is a wasteful number, since it uses less digits than its factorization.

254402040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120031 (or 2120027 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 254402040 is about 15949.9855799308. The cubic root of 254402040 is about 633.6365147370.

Adding to 254402040 its reverse (40204452), we get a palindrome (294606492).

The spelling of 254402040 in words is "two hundred fifty-four million, four hundred two thousand, forty".